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Pollard AA, Hauson AO, Lackey NS, Zhang E, Khayat S, Carson B, Fortea L, Radua J, Grant I. Functional neuroanatomy of craving in heroin use disorder: voxel-based meta-analysis of functional magnetic resonance imaging (fMRI) drug cue reactivity studies. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2023; 49:418-430. [PMID: 36880845 DOI: 10.1080/00952990.2023.2172423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 03/08/2023]
Abstract
Background: The neuroanatomy of craving, typically investigated using the functional magnetic resonance imaging (fMRI) drug cue reactivity (FDCR) paradigm, has been shown to involve the mesocorticolimbic, nigrostriatal, and corticocerebellar systems in several substances. However, the neuroanatomy of craving in heroin use disorder is still unclear.Objective: The current meta-analysis examines previous research on the neuroanatomy of craving in abstinent individuals with opioid use disorder (OUD).Method: Seven databases were searched for studies comparing abstinent OUD versus healthy controls on drug > neutral contrast interaction at the whole-brain level. Voxel-based meta-analysis was performed using seed-based d mapping with permuted subject images (SDM-PSI). Thresholds were set at a family-wise error rate of less than 5% with the default pre-processing parameters of SDM-PSI.Results: A total of 10 studies were included (296 OUD and 187 controls). Four hyperactivated clusters were identified with Hedges' g of peaks that ranged from 0.51 to 0.82. These peaks and their associated clusters correspond to the three systems identified in the previous literature: a) mesocorticolimbic, b) nigrostriatal, and c) corticocerebellar. There were also newly revealed hyperactivation regions including the bilateral cingulate, precuneus, fusiform gyrus, pons, lingual gyrus, and inferior occipital gyrus. The meta-analysis did not reveal areas of hypoactivation.Conclusion: Recommendations based on the functional neuroanatomical findings of this meta-analysis include pharmacological interventions such as buprenorphine/naloxone and cognitive-behavioral treatments such as cue-exposure combined with HRV biofeedback. In addition, research should utilize FDCR as pre- and post-measurement to determine the effectiveness and mechanism of action of such interventions.
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Affiliation(s)
- Anna A Pollard
- California School of Professional Psychology, Clinical Psychology PhD Program, San Diego, CA, USA
- Institute of Brain Research and Integrated Neuropsychological Services (iBRAINS.org), San Diego, CA, USA
| | - Alexander O Hauson
- California School of Professional Psychology, Clinical Psychology PhD Program, San Diego, CA, USA
- Institute of Brain Research and Integrated Neuropsychological Services (iBRAINS.org), San Diego, CA, USA
- Department of Psychiatry, University of San Diego, La Jolla, CA, USA
| | - Nicholas S Lackey
- California School of Professional Psychology, Clinical Psychology PhD Program, San Diego, CA, USA
- Institute of Brain Research and Integrated Neuropsychological Services (iBRAINS.org), San Diego, CA, USA
| | - Emily Zhang
- California School of Professional Psychology, Clinical Psychology PhD Program, San Diego, CA, USA
- Institute of Brain Research and Integrated Neuropsychological Services (iBRAINS.org), San Diego, CA, USA
| | - Sarah Khayat
- Institute of Brain Research and Integrated Neuropsychological Services (iBRAINS.org), San Diego, CA, USA
| | - Bryce Carson
- California School of Professional Psychology, Clinical Psychology PhD Program, San Diego, CA, USA
- Institute of Brain Research and Integrated Neuropsychological Services (iBRAINS.org), San Diego, CA, USA
| | - Lydia Fortea
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
- Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Joaquim Radua
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden
- Department of Psychosis Studies, Institute of Psychology, Psychiatry, and Neuroscience, King's College London, London, UK
| | - Igor Grant
- Department of Psychiatry, University of San Diego, La Jolla, CA, USA
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Heriseanu AI, Spirou D, Moraes CEF, Hay P, Sichieri R, Appolinario JC. Grazing Is Associated with ADHD Symptoms, Substance Use, and Impulsivity in a Representative Sample of a Large Metropolitan Area in Brazil. Nutrients 2023; 15:2987. [PMID: 37447311 DOI: 10.3390/nu15132987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Grazing is a clinically relevant eating behaviour, especially when it presents with a sense of loss of control (compulsive grazing). There is evidence that other disordered eating patterns are associated with problematic substance use and impulsivity-related conditions, such as attention-deficit/hyperactivity disorder (ADHD). This overlap contributes to higher psychopathology and treatment complications. Less is known about grazing, and most information originates in high-income countries. Hence, we sought to investigate relationships between grazing, tobacco and alcohol use, ADHD, and impulsivity in a large representative sample from Brazil. Data were collected by trained interviewers from adults (N = 2297) through an in-person household survey based on a stratified and clustered probability sample. We found significant associations between compulsive grazing and problematic alcohol use (OR = 3.02, 95% CI: 1.65, 5.53), ADHD (OR = 8.94, 95% CI: 5.11, 15.63), and smoking (OR = 1.67, 95% CI: 1.12, 2.47), with impulsivity contributing to the first two relationships. The substantial association with ADHD suggests that other executive functions may promote disordered eating, possibly expressed through difficulties in adhering to regular meals. Clinically, these findings highlight the importance of assessing problematic eating patterns, such as compulsive grazing, in those presenting with difficulties with substance use or impulsivity, and vice versa.
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Affiliation(s)
- Andreea I Heriseanu
- eCentreClinic, School of Psychological Sciences, Macquarie University, Wallumattagal Campus, Macquarie Park, NSW 2109, Australia
| | - Dean Spirou
- School of Medicine, Western Sydney University, Sydney, NSW 2214, Australia
- Discipline of Clinical Psychology, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Carlos E F Moraes
- Translational Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
- Obesity and Eating Disorders Group, Institute of Psychiatry, Federal University of Rio de Janeiro, Rio de Janeiro 22290-140, Brazil
| | - Phillipa Hay
- School of Medicine, Western Sydney University, Sydney, NSW 2214, Australia
- Translational Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
- Mental Health Service, South West Sydney Local Health District, Campbelltown, NSW 2560, Australia
| | - Rosely Sichieri
- Social Medicine Institute, State University of Rio de Janeiro, Rio de Janeiro 22290-140, Brazil
| | - Jose C Appolinario
- Obesity and Eating Disorders Group, Institute of Psychiatry, Federal University of Rio de Janeiro, Rio de Janeiro 22290-140, Brazil
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Gangal H, Xie X, Huang Z, Cheng Y, Wang X, Lu J, Zhuang X, Essoh A, Huang Y, Chen R, Smith LN, Smith RJ, Wang J. Drug reinforcement impairs cognitive flexibility by inhibiting striatal cholinergic neurons. Nat Commun 2023; 14:3886. [PMID: 37391566 PMCID: PMC10313783 DOI: 10.1038/s41467-023-39623-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 06/20/2023] [Indexed: 07/02/2023] Open
Abstract
Addictive substance use impairs cognitive flexibility, with unclear underlying mechanisms. The reinforcement of substance use is mediated by the striatal direct-pathway medium spiny neurons (dMSNs) that project to the substantia nigra pars reticulata (SNr). Cognitive flexibility is mediated by striatal cholinergic interneurons (CINs), which receive extensive striatal inhibition. Here, we hypothesized that increased dMSN activity induced by substance use inhibits CINs, reducing cognitive flexibility. We found that cocaine administration in rodents caused long-lasting potentiation of local inhibitory dMSN-to-CIN transmission and decreased CIN firing in the dorsomedial striatum (DMS), a brain region critical for cognitive flexibility. Moreover, chemogenetic and time-locked optogenetic inhibition of DMS CINs suppressed flexibility of goal-directed behavior in instrumental reversal learning tasks. Notably, rabies-mediated tracing and physiological studies showed that SNr-projecting dMSNs, which mediate reinforcement, sent axonal collaterals to inhibit DMS CINs, which mediate flexibility. Our findings demonstrate that the local inhibitory dMSN-to-CIN circuit mediates the reinforcement-induced deficits in cognitive flexibility.
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Affiliation(s)
- Himanshu Gangal
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
- Institute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA
| | - Xueyi Xie
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Zhenbo Huang
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Yifeng Cheng
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Xuehua Wang
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Jiayi Lu
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Xiaowen Zhuang
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Amanda Essoh
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
| | - Yufei Huang
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
- Institute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA
| | - Ruifeng Chen
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX, 77843, USA
| | - Laura N Smith
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA
- Institute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA
| | - Rachel J Smith
- Institute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, 77843, USA
| | - Jun Wang
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, 77807, USA.
- Institute for Neuroscience, Texas A&M University, College Station, TX, 77843, USA.
- Interdisciplinary Faculty of Toxicology, Texas A&M University, College Station, TX, 77843, USA.
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Kang S, Hong SI, Kang S, Song M, Yang MA, Essa H, Baker M, Lee J, Bruce RA, Lee SW, Choi DS. Astrocyte activities in the external globus pallidus regulate action-selection strategies in reward-seeking behaviors. SCIENCE ADVANCES 2023; 9:eadh9239. [PMID: 37327345 PMCID: PMC10275597 DOI: 10.1126/sciadv.adh9239] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/12/2023] [Indexed: 06/18/2023]
Abstract
An imbalance in goal-directed and habitual behavioral control is a hallmark of decision-making-related disorders, including addiction. Although external globus pallidus (GPe) is critical for action selection, which harbors enriched astrocytes, the role of GPe astrocytes involved in action-selection strategies remained unknown. Using in vivo calcium signaling with fiber photometry, we found substantially attenuated GPe astrocytic activity during habitual learning compared to goal-directed learning. The support vector machine analysis predicted the behavioral outcomes. Chemogenetic activation of the astrocytes or inhibition of GPe pan-neuronal activities facilitates the transition from habit to goal-directed reward-seeking behavior. Next, we found increased astrocyte-specific GABA (γ-aminobutyric acid) transporter type 3 (GAT3) messenger RNA expression during habit learning. Notably, the pharmacological inhibition of GAT3 occluded astrocyte activation-induced transition from habitual to goal-directed behavior. On the other hand, attentional stimuli shifted the habit to goal-directed behaviors. Our findings suggest that the GPe astrocytes regulate the action selection strategy and behavioral flexibility.
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Affiliation(s)
- Shinwoo Kang
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Sa-Ik Hong
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Seungwoo Kang
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Minryung Song
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Minsu Abel Yang
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
- Program of Brain and Cognitive Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Hesham Essa
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Matthew Baker
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Jeyeon Lee
- Department of Radiology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Robert A. Bruce
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Sang Wan Lee
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
- Department of Brain and Cognitive Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
- Kim Jaechul Graduate School of AI, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Doo-Sup Choi
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Department of Psychiatry and Psychology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Neuroscience Program, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
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Tomar M, Rodger J, Moretti J. Dorsal striatum c-Fos activity in perseverative ephrin-A2A5 -/- mice and the cellular effect of low-intensity rTMS. Front Neural Circuits 2023; 17:1179096. [PMID: 37396401 PMCID: PMC10311007 DOI: 10.3389/fncir.2023.1179096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/16/2023] [Indexed: 07/04/2023] Open
Abstract
Introduction Overreliance on habit is linked with disorders, such as drug addiction and obsessive-compulsive disorder, and there is increasing interest in the use of repetitive transcranial magnetic stimulation (rTMS) to alter neuronal activity in the relevant pathways and for therapeutic outcomes. In this study, we researched the brains of ephrin-A2A5-/- mice, which previously showed perseverative behavior in progressive-ratio tasks, associated with low cellular activity in the nucleus accumbens. We investigated whether rTMS treatment had altered the activity of the dorsal striatum in a way that suggested altered hierarchical recruitment of brain regions from the ventral striatum to the dorsal striatum, which is linked to abnormal habit formation. Methods Brain sections from a limited number of mice that underwent training and performance on a progressive ratio task with and without low-intensity rTMS (LI-rTMS) were taken from a previous study. We took advantage of the previous characterization of perseverative behavior to investigate the contribution of different neuronal subtypes and striatal regions within this limited sample. Striatal regions were stained for c-Fos as a correlate of neuronal activation for DARPP32 to identify medium spiny neurons (MSNs) and for GAD67 to identify GABA-ergic interneurons. Results and discussion Contrary to our hypothesis, we found that neuronal activity in ephrin-A2A5-/- mice still reflected the typical organization of goal-directed behavior. There was a significant difference in the proportion of neuronal activity across the striatum between experimental groups and control but no significant effects identifying a specific regional change. However, there was a significant group by treatment interaction which suggests that MSN activity is altered in the dorsomedial striatum and a trend suggesting that rTMS increases ephrin-A2A5-/- MSN activity in the DMS. Although preliminary and inconclusive, the analysis of this archival data suggests that investigating circuit-based changes in striatal regions may provide insight into chronic rTMS mechanisms that could be relevant to treating disorders associated with perseverative behavior.
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Affiliation(s)
- Maitri Tomar
- School of Biological Sciences, University of Western Australia, Crawley, WA, Australia
- Brain Plasticity Lab, Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
| | - Jennifer Rodger
- School of Biological Sciences, University of Western Australia, Crawley, WA, Australia
- Brain Plasticity Lab, Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
| | - Jessica Moretti
- School of Biological Sciences, University of Western Australia, Crawley, WA, Australia
- Brain Plasticity Lab, Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
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Melchor-Eixea I, Guarque-Chabrera J, Sanchez-Hernandez A, Ibáñez-Marín P, Pastor R, Miquel M. Putting forward a model for the role of the cerebellum in cocaine-induced pavlovian memory. Front Syst Neurosci 2023; 17:1154014. [PMID: 37388941 PMCID: PMC10303950 DOI: 10.3389/fnsys.2023.1154014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/25/2023] [Indexed: 07/01/2023] Open
Abstract
Substance Use Disorder (SUD) involves emotional, cognitive, and motivational dysfunction. Long-lasting molecular and structural changes in brain regions functionally and anatomically linked to the cerebellum, such as the prefrontal cortex, amygdala, hippocampus, basal ganglia, and ventral tegmental area, are characteristic of SUD. Direct and indirect reciprocal connectivity between the cerebellum and these brain regions can explain cerebellar roles in Pavlovian and reinforcement learning, fear memory, and executive functions. It is increasingly clear that the cerebellum modulates brain functions altered in SUD and other neuropsychiatric disorders that exhibit comorbidity with SUD. In the present manuscript, we review and discuss this evidence and present new research exploring the role of the cerebellum in cocaine-induced conditioned memory using chemogenetic tools (designer receptor exclusively activated by designer drug, DREADDs). Our preliminary data showed that inactivation of a region that includes the interposed and lateral deep cerebellar nuclei reduces the facilitating effect of a posterior vermis lesion on cocaine-induced preference conditioning. These findings support our previous research and suggest that posterior vermis damage may increase drug impact on the addiction circuitry by regulating activity in the DCN. However, they raise further questions that will also be discussed.
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107
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Jones BO, Paladino MS, Cruz AM, Spencer HF, Kahanek PL, Scarborough LN, Georges SF, Smith RJ. Punishment resistance for cocaine is associated with inflexible habits in rats. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.08.544242. [PMID: 37333299 PMCID: PMC10274925 DOI: 10.1101/2023.06.08.544242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Addiction is characterized by continued drug use despite negative consequences. In an animal model, a subset of rats continues to self-administer cocaine despite footshock consequences, showing punishment resistance. We sought to test the hypothesis that punishment resistance arises from failure to exert goal-directed control over habitual cocaine seeking. While habits are not inherently permanent or maladaptive, continued use of habits under conditions that should encourage goal-directed control makes them maladaptive and inflexible. We trained male and female Sprague Dawley rats on a seeking-taking chained schedule of cocaine self-administration (2 h/day). We then exposed them to 4 days of punishment testing, in which footshock (0.4 mA, 0.3 s) was delivered randomly on one-third of trials, immediately following completion of seeking and prior to extension of the taking lever. Before and after punishment testing (4 days pre-punishment and ≥4 days post-punishment), we assessed whether cocaine seeking was goal-directed or habitual using outcome devaluation via cocaine satiety. We found that punishment resistance was associated with continued use of habits, whereas punishment sensitivity was associated with increased goal-directed control. Although punishment resistance was not predicted by habitual responding pre-punishment, it was associated with habitual responding post-punishment. In parallel studies of food self-administration, we similarly observed that punishment resistance was associated with habitual responding post-punishment but not pre-punishment. These findings indicate that punishment resistance is related to habits that have become inflexible and persist under conditions that should encourage a transition to goal-directed behavior.
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Affiliation(s)
- Bradley O. Jones
- Institute for Neuroscience, Texas A&M University, College Station, TX, USA
| | - Morgan S. Paladino
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
| | - Adelis M. Cruz
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
| | - Haley F. Spencer
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
| | - Payton L. Kahanek
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
| | - Lauren N. Scarborough
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
| | - Sandra F. Georges
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
| | - Rachel J. Smith
- Institute for Neuroscience, Texas A&M University, College Station, TX, USA
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, USA
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Cajiao-Manrique MDM, Casadó-Anguera V, García-Blanco A, Maldonado R, Martín-García E. THC exposure during adolescence increases impulsivity-like behavior in adulthood in a WIN 55,212-2 self-administration mouse model. Front Psychiatry 2023; 14:1148993. [PMID: 37304451 PMCID: PMC10248087 DOI: 10.3389/fpsyt.2023.1148993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/04/2023] [Indexed: 06/13/2023] Open
Abstract
Background Cannabis addiction is a chronically relapsing disorder lacking effective treatment. Regular cannabis consumption typically begins during adolescence, and this early cannabinoid exposure may increase the risk for drug addiction in adulthood. Objective This study investigates the development of cannabis addiction-like behavior in adult mice after adolescent exposure to the main psychoactive component of cannabis, Δ9-tetrahydrocannabinol (THC). Methods Adolescent male mice were exposed to 5 mg/kg of THC from postnatal days 37 to 57. Operant self-administration sessions of WIN 55,212-2 (12.5 μg/kg/infusion) were conducted for 10 days. Mice were tested for three addiction-like criteria (persistence of response, motivation, and compulsivity), two parameters related to craving (resistance to extinction and drug-seeking behavior), and two phenotypic vulnerability traits related to substance use disorders (impulsivity and reward sensitivity). Additionally, qPCR assays were performed to detect differentially expressed genes in medial prefrontal cortex (mPFC), nucleus accumbens (NAc), dorsal striatum, and hippocampus (HPC) of "addicted" and "non-addicted" mice. Results Adolescent THC exposure did not modify WIN 55,212-2 reinforcement nor the development of cannabis addiction-like behavior. Inversely, THC pre-exposed mice displayed impulsive-like behavior in adulthood, which was more pronounced in mice that developed the addiction-like criteria. Moreover, downregulated drd2 and adora2a gene expression in NAc and HPC was revealed in THC pre-exposed mice, as well as a downregulation of drd2 expression in mPFC of vehicle pre-treated mice that developed addiction-like behaviors. Discussion These findings suggest that adolescent THC exposure may promote impulsivity-like behavior in adulthood, associated with downregulated drd2 and adora2a expression in NAc and HPC.
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Affiliation(s)
- María del Mar Cajiao-Manrique
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Verònica Casadó-Anguera
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Alejandra García-Blanco
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Rafael Maldonado
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Elena Martín-García
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
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Ho EV, Welch A, Thompson SL, Knowles JA, Dulawa SC. Mice lacking Ptprd exhibit deficits in goal-directed behavior and female-specific impairments in sensorimotor gating. PLoS One 2023; 18:e0277446. [PMID: 37205689 PMCID: PMC10198499 DOI: 10.1371/journal.pone.0277446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/16/2023] [Indexed: 05/21/2023] Open
Abstract
Protein Tyrosine Phosphatase receptor type D (PTPRD) is a member of the protein tyrosine phosphatase family that mediates cell adhesion and synaptic specification. Genetic studies have linked Ptprd to several neuropsychiatric phenotypes, including Restless Leg Syndrome (RLS), opioid abuse disorder, and antipsychotic-induced weight gain. Genome-wide association studies (GWAS) of either pediatric obsessive-compulsive traits, or Obsessive-Compulsive Disorder (OCD), have identified loci near PTPRD as genome-wide significant, or strongly suggestive for this trait. We assessed Ptprd wild-type (WT), heterozygous (HT), and knockout (KO) mice for behavioral dimensions that are altered in OCD, including anxiety and exploration (open field test, dig test), perseverative behavior (splash-induced grooming, spatial d), sensorimotor gating (prepulse inhibition), and home cage goal-directed behavior (nest building). No effect of genotype was observed in any measure of the open field test, dig test, or splash test. However, Ptprd KO mice of both sexes showed impairments in nest building behavior. Finally, female, but not male, Ptprd KO mice showed deficits in prepulse inhibition, an operational measure of sensorimotor gating that is reduced in female, but not male, OCD patients. Our results indicate that constitutive lack of Ptprd may contribute to the development of certain domains that are altered OCD, including goal-directed behavior, and reduced sensorimotor gating specifically in females.
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Affiliation(s)
- Emily V. Ho
- Neurosciences Graduate Program, University of California San Diego1, La Jolla, CA, United States of America
| | - Amanda Welch
- Department of Psychiatry, University of California San Diego, La Jolla, CA, United States of America
| | - Summer L. Thompson
- Department of Psychiatry, University of California San Diego, La Jolla, CA, United States of America
| | - James A. Knowles
- Department of Cell Biology, SUNY Downstate Medical Center College of Medicine, Brooklyn, NY, United States of America
| | - Stephanie C. Dulawa
- Neurosciences Graduate Program, University of California San Diego1, La Jolla, CA, United States of America
- Department of Psychiatry, University of California San Diego, La Jolla, CA, United States of America
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Kulkarni KR, O'Brien M, Gu X. Longing to act: Bayesian inference as a framework for craving in behavioral addiction. Addict Behav 2023; 144:107752. [PMID: 37201396 DOI: 10.1016/j.addbeh.2023.107752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 05/20/2023]
Abstract
Traditionally, craving is considered a defining feature of drug addiction. Accumulating evidence suggests that craving can also exist in behavioral addictions (e.g., gambling disorder) without drug-induced effects. However, the degree to which mechanisms of craving overlap between classic substance use disorders and behavioral addictions remains unclear. There is, therefore, an urgent need to develop an overarching theory of craving that conceptually integrates findings across behavioral and drug addictions. In this review, we will first synthesize existing theories and empirical findings related to craving in both drug-dependent and -independent addictive disorders. Building on the Bayesian brain hypothesis and previous work on interoceptive inference, we will then propose a computational theory for craving in behavioral addiction, where the target of craving is execution of an action (e.g., gambling) rather than a drug. Specifically, we conceptualize craving in behavioral addiction as a subjective belief about physiological states of the body associated with action completion and is updated based on both a prior belief ("I need to act to feel good") and sensory evidence ("I cannot act"). We conclude by briefly discussing the therapeutic implications of this framework. In summary, this unified Bayesian computational framework for craving generalizes across addictive disorders, provides explanatory power for ostensibly conflicting empirical findings, and generates strong hypotheses for future empirical studies. The disambiguation of the computational components underlying domain-general craving using this framework will lead to a deeper understanding of, and effective treatment targets for, behavioral and drug addictions.
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Affiliation(s)
- Kaustubh R Kulkarni
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States; Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Madeline O'Brien
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States; Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Xiaosi Gu
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States; Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, United States; Center for Computational Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States.
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111
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Philip VM, He H, Saul MC, Dickson PE, Bubier JA, Chesler EJ. Gene expression genetics of the striatum of Diversity Outbred mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.11.540390. [PMID: 37214980 PMCID: PMC10197688 DOI: 10.1101/2023.05.11.540390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Brain transcriptional variation is a heritable trait that mediates complex behaviors, including addiction. Expression quantitative trait locus (eQTL) mapping reveals genomic regions harboring genetic variants that influence transcript abundance. In this study, we profiled transcript abundance in the striatum of 386 Diversity Outbred (J:DO) mice of both sexes using RNA-Seq. All mice were characterized using a behavioral battery of widely-used exploratory and risk-taking assays prior to transcriptional profiling. We performed eQTL mapping, incorporated the results into a browser-based eQTL viewer, and deposited co-expression network members in GeneWeaver. The eQTL viewer allows researchers to query specific genes to obtain allelic effect plots, analyze SNP associations, assess gene expression correlations, and apply mediation analysis to evaluate whether the regulatory variant is acting through the expression of another gene. GeneWeaver allows multi-species comparison of gene sets using statistical and combinatorial tools. This data resource allows users to find genetic variants that regulate differentially expressed transcripts and place them in the context of other studies of striatal gene expression and function in addiction-related behavior.
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Affiliation(s)
- Vivek M. Philip
- The Jackson Laboratory for Mammalian Genetics, Bar Harbor, ME 04605
| | - Hao He
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032
| | - Michael C. Saul
- The Jackson Laboratory for Mammalian Genetics, Bar Harbor, ME 04605
| | - Price E. Dickson
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine Marshall University, 1700 3rd Ave. Huntington, WV 25703
| | - Jason A. Bubier
- The Jackson Laboratory for Mammalian Genetics, Bar Harbor, ME 04605
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Giangrasso DM, Veros KM, Timm MM, West PJ, Wilcox KS, Keefe KA. Glutamate dynamics in the dorsolateral striatum of rats with goal-directed and habitual cocaine-seeking behavior. Front Mol Neurosci 2023; 16:1160157. [PMID: 37251646 PMCID: PMC10213946 DOI: 10.3389/fnmol.2023.1160157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/17/2023] [Indexed: 05/31/2023] Open
Abstract
The shift from drug abuse to addiction is considered to arise from the transition between goal-directed and habitual control over drug behavior. Habitual responding for appetitive and skill-based behaviors is mediated by potentiated glutamate signaling in the dorsolateral striatum (DLS), but the state of the DLS glutamate system in the context of habitual drug-behavior remains undefined. Evidence from the nucleus accumbens of cocaine-experienced rats suggests that decreased transporter-mediated glutamate clearance and enhanced synaptic glutamate release contribute to the potentiated glutamate signaling that underlies the enduring vulnerability to relapse. Preliminary evidence from the dorsal striatum of cocaine-experienced rats suggests that this region exhibits similar alterations to glutamate clearance and release, but it is not known whether these glutamate dynamics are associated with goal-directed or habitual control over cocaine-seeking behavior. Therefore, we trained rats to self-administer cocaine in a chained cocaine-seeking and -taking paradigm, which yielded goal-directed, intermediate, and habitual cocaine-seeking rats. We then assessed glutamate clearance and release dynamics in the DLS of these rats using two different methods: synaptic transporter current (STC) recordings of patch-clamped astrocytes and the intensity-based glutamate sensing fluorescent reporter (iGluSnFr). While we observed a decreased rate of glutamate clearance in STCs evoked with single-pulse stimulation in cocaine-experienced rats, we did not observe any cocaine-induced differences in glutamate clearance rates from STCs evoked with high frequency stimulation (HFS) or iGluSnFr responses evoked with either double-pulse stimulation or HFS. Furthermore, GLT-1 protein expression in the DLS was unchanged in cocaine-experienced rats, regardless of their mode of control over cocaine-seeking behavior. Lastly, there were no differences in metrics of glutamate release between cocaine-experienced rats and yoked-saline controls in either assay. Together, these results suggest that glutamate clearance and release dynamics in the DLS are largely unaltered by a history of cocaine self-administration on this established cocaine seeking-taking paradigm, regardless of whether the control over the cocaine seeking behavior was habitual or goal directed.
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Affiliation(s)
- Danielle M. Giangrasso
- Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
- Interdepartmental Program in Neuroscience, University of Utah, Salt Lake City, UT, United States
| | - Kaliana M. Veros
- Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
- Interdepartmental Program in Neuroscience, University of Utah, Salt Lake City, UT, United States
| | - Maureen M. Timm
- Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
| | - Peter J. West
- Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
- Interdepartmental Program in Neuroscience, University of Utah, Salt Lake City, UT, United States
- Anticonvulsant Drug Development Program, Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
| | - Karen S. Wilcox
- Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
- Interdepartmental Program in Neuroscience, University of Utah, Salt Lake City, UT, United States
- Anticonvulsant Drug Development Program, Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
| | - Kristen A. Keefe
- Department of Pharmacology & Toxicology, University of Utah, Salt Lake City, UT, United States
- Interdepartmental Program in Neuroscience, University of Utah, Salt Lake City, UT, United States
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Mondello JE, Gano A, Vore AS, Deak T. Cues associated with repeated ethanol exposure facilitate the corticosterone response to ethanol and immunological challenges in adult male Sprague Dawley rats: implications for neuroimmune regulation. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2023; 49:359-369. [PMID: 36862971 PMCID: PMC10474242 DOI: 10.1080/00952990.2023.2169831] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 01/06/2023] [Accepted: 01/14/2023] [Indexed: 03/04/2023]
Abstract
Background: We previously found a conditioned increase in central neuroinflammatory markers (Interleukin 6; IL-6) following exposure to alcohol-associated cues. Recent studies suggest (unconditioned) induction of IL-6 is entirely dependent on ethanol-induced corticosterone.Objectives: The goals of these present studies were to test whether alcohol-paired cues facilitated the hypothalamic-pituitary-adrenal (HPA) axis response to either a subthreshold priming alcohol dose or an immune or psychological stress challengeMethods: In Experiment 1 (N = 64), adult male Sprague Dawley rats were trained (paired or unpaired, four pairings total) with either vehicle or 2 g/kg alcohol [intragastric (i.g.) or intraperitoneal (i.p.)] injections. In Experiments 2 (N = 28) and 3 (N = 30), male rats were similarly trained but with 4 g/kg alcohol i.g. intubations. On test day, all rats were either administered a 0.5 g/kg alcohol dose (i.p. or i.g. Experiment 1), a 100 µg/kg i.p. lipopolysaccharide (LPS) challenge (Experiment 2), or a restraint challenge (Experiment 3), and exposed to alcohol-associated cues. Blood plasma was collected for analysis.Results: Alcohol-associated cues facilitated the plasma corticosterone response to a subthreshold dose of alcohol (F1,28 = 4.85, p < .05) and an immune challenge (F8,80 = 6.23, p < .001), but not a restraint challenge (F2,27 = 0.18, p > .05).Conclusion: These findings reveal that the impact of the cues associated with alcohol intoxication on the HPA axis may be context-specific. This work illustrates how HPA axis learning processes form in the early stages of alcohol use and has important implications for how the HPA and neuroimmune conditioning may develop in alcohol use disorder in humans and facilitate the response to a later immune challenge.
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Affiliation(s)
- Jamie E. Mondello
- Developmental Exposure Alcohol Research Center (DEARC), Behavioral Neuroscience Program, Department of Psychology, Binghamton University, Binghamton NY 13902-6000, USA
| | - Anny Gano
- Developmental Exposure Alcohol Research Center (DEARC), Behavioral Neuroscience Program, Department of Psychology, Binghamton University, Binghamton NY 13902-6000, USA
| | - Andrew S. Vore
- Developmental Exposure Alcohol Research Center (DEARC), Behavioral Neuroscience Program, Department of Psychology, Binghamton University, Binghamton NY 13902-6000, USA
| | - Terrence Deak
- Developmental Exposure Alcohol Research Center (DEARC), Behavioral Neuroscience Program, Department of Psychology, Binghamton University, Binghamton NY 13902-6000, USA
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Lapointe T, Francis T, Doray K, Leri F. Enhancement of memory consolidation by an avoidance conditioned stimulus: Modulation by the D3 receptor. Neuropharmacology 2023; 235:109572. [PMID: 37149214 DOI: 10.1016/j.neuropharm.2023.109572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 05/01/2023] [Accepted: 05/02/2023] [Indexed: 05/08/2023]
Abstract
Conditioned stimuli (CS) paired with foot-shock can enhance memory consolidation. Because the dopamine D3R has been implicated in mediating various responses to CSs, the current study explored its potential role in modulation of memory consolidation by an avoidance CS. Male Sprague-Dawley rats trained to avoid foot-shocks in a two-way signalled active avoidance task (8 sessions, 30 trials per session, 0.8 mA foot-shock) were pre-treated with the D3R antagonist NGB-2904 (Vehicle, 0.1 or 5 mg/kg) and exposed to the CS immediately after the sample phase of an object recognition memory task. Discrimination ratios were assessed 72 h later. Immediate, but not delayed (6 h), post-sample exposure to the CS enhanced object recognition memory and this effect was dose-dependently blocked by NGB-2904. Control experiments with the beta-noradrenergic receptor antagonist propranolol (10 or 20 mg/kg) and D2R antagonist pimozide (0.2 or 0.6 mg/kg) indicated that NGB-2904 targeted post-training memory consolidation. Exploring the pharmacological selectivity of the D3R effect, it was found that: 1) 5 mg/kg NGB-2904 blocked conditioned memory modulation produced by post-sample exposure to a "weak" CS (one day of avoidance training) and concurrent stimulation of catecholamine activity by 10 mg/kg bupropion; 2) post-sample exposure to a "weak" CS and concurrent administration of the D3R agonist 7-OH-DPAT (1 mg/kg) enhanced consolidation of object memory. Finally, because 5 mg/kg NGB-2904 had no effect on modulation by avoidance training in the presence of foot-shocks, the findings herein support the hypothesis that the D3R plays an important role in modulation of memory consolidation by CSs.
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Affiliation(s)
- Thomas Lapointe
- Department of Psychology and Collaborative Program in Neuroscience, University of Guelph, Guelph, ON, Canada
| | - Travis Francis
- Department of Psychology and Collaborative Program in Neuroscience, University of Guelph, Guelph, ON, Canada
| | - Kamrani Doray
- Department of Psychology and Collaborative Program in Neuroscience, University of Guelph, Guelph, ON, Canada
| | - Francesco Leri
- Department of Psychology and Collaborative Program in Neuroscience, University of Guelph, Guelph, ON, Canada.
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Baratta MV, Seligman MEP, Maier SF. From helplessness to controllability: toward a neuroscience of resilience. Front Psychiatry 2023; 14:1170417. [PMID: 37229393 PMCID: PMC10205144 DOI: 10.3389/fpsyt.2023.1170417] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/13/2023] [Indexed: 05/27/2023] Open
Abstract
"Learned helplessness" refers to debilitating outcomes, such as passivity and increased fear, that follow an uncontrollable adverse event, but do not when that event is controllable. The original explanation argued that when events are uncontrollable the animal learns that outcomes are independent of its behavior, and that this is the active ingredient in producing the effects. Controllable adverse events, in contrast, fail to produce these outcomes because they lack the active uncontrollability element. Recent work on the neural basis of helplessness, however, takes the opposite view. Prolonged exposure to aversive stimulation per se produces the debilitation by potent activation of serotonergic neurons in the brainstem dorsal raphe nucleus. Debilitation is prevented with an instrumental controlling response, which activates prefrontal circuitry detecting control and subsequently blunting the dorsal raphe nucleus response. Furthermore, learning control alters the prefrontal response to future adverse events, thereby preventing debilitation and producing long-term resiliency. The general implications of these neuroscience findings may apply to psychological therapy and prevention, in particular by suggesting the importance of cognitions and control, rather than habits of control.
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Affiliation(s)
- Michael V. Baratta
- Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO, United States
| | - Martin E. P. Seligman
- Positive Psychology Center, University of Pennsylvania, Philadelphia, PA, United States
| | - Steven F. Maier
- Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO, United States
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116
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van Timmeren T, Piray P, Goudriaan AE, van Holst RJ. Goal-directed and habitual decision making under stress in gambling disorder: An fMRI study. Addict Behav 2023; 140:107628. [PMID: 36716563 DOI: 10.1016/j.addbeh.2023.107628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/02/2022] [Accepted: 01/20/2023] [Indexed: 01/26/2023]
Abstract
The development of addictive behaviors has been suggested to be related to a transition from goal-directed to habitual decision making. Stress is a factor known to prompt habitual behavior and to increase the risk for addiction and relapse. In the current study, we therefore used functional MRI to investigate the balance between goal-directed 'model-based' and habitual 'model-free' control systems and whether acute stress would differentially shift this balance in gambling disorder (GD) patients compared to healthy controls (HCs). Using a within-subject design, 22 patients with GD and 20 HCs underwent stress induction or a control condition before performing a multistep decision-making task during fMRI. Salivary cortisol levels showed that the stress induction was successful. Contrary to our hypothesis, GD patients did not show impaired goal-directed 'model-based' decision making, which remained similar to HCs after stress induction. Bayes factors provided three times more evidence against a difference between the groups or a group-by-stress interaction on the balance between model-based and model-free decision making. Similarly, no differences were found between groups and conditions on the neural estimates of model-based or model-free decision making. These results challenge the notion that GD is related to an increased reliance on habitual (or decreased goal-directed) control, even during stress.
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Affiliation(s)
- Tim van Timmeren
- Amsterdam Institute for Addiction Research, Amsterdam UMC, Department of Psychiatry, University of Amsterdam, The Netherlands; Habit Lab, Department of Clinical Psychology, University of Amsterdam, The Netherlands; Department of Social Health and Organizational Psychology, Utrecht University, The Netherlands.
| | - Payam Piray
- Department of Psychology, University of Southern California, USA
| | - Anna E Goudriaan
- Amsterdam Institute for Addiction Research, Amsterdam UMC, Department of Psychiatry, University of Amsterdam, The Netherlands; Arkin Mental Health, The Netherlands
| | - Ruth J van Holst
- Amsterdam Institute for Addiction Research, Amsterdam UMC, Department of Psychiatry, University of Amsterdam, The Netherlands
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117
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Wilhelm RA, Spechler PA, Demuth MJ, Gonzalez M, Kemp C, Walls M, Aupperle RL, Paulus MP, Stewart JL, White EJ. Striatal hypoactivation during monetary loss anticipation in individuals with substance use disorders in a heterogenous urban American Indian sample. Drug Alcohol Depend 2023; 246:109852. [PMID: 37003108 PMCID: PMC10614574 DOI: 10.1016/j.drugalcdep.2023.109852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 04/03/2023]
Abstract
Research suggests that disproportionate exposure to risk factors places American Indian (AI) peoples at higher risk for substance use disorders (SUD). Although SUD is linked to striatal prioritization of drug rewards over other appetitive stimuli, there are gaps in the literature related to the investigation of aversive valuation processing, and inclusion of AI samples. To address these gaps, this study compared striatal anticipatory gain and loss processing between AI-identified with SUD (SUD+; n = 52) and without SUD (SUD-; n = 35) groups from the Tulsa 1000 study who completed a monetary incentive delay (MID) task during functional magnetic resonance imaging. Results indicated that striatal activations in the nucleus accumbens (NAcc), caudate, and putamen were greatest for anticipating gains (ps < 0.001) but showed no group differences. In contrast to gains, the SUD+ exhibited lower NAcc (p = .01, d =0.53) and putamen (p = .04, d =0.40) activation to anticipating large losses than the comparison group. Within SUD+ , lower striatal responses during loss anticipations were associated with slower MID reaction times (NAcc: r = -0.43; putamen: r = -0.35) during loss trials. This is among the first imaging studies to examine underlying neural mechanisms associated with SUD within AIs. Attenuated loss processing provides initial evidence of a potential mechanism wherein blunted prediction of aversive consequences may be a defining feature of SUD that can inform future prevention and intervention targets.
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Affiliation(s)
| | | | - Mara J Demuth
- Laureate Institute for Brain Research, Tulsa, OK, USA
| | - Miigis Gonzalez
- Center for American Indian Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Christopher Kemp
- Center for American Indian Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Melissa Walls
- Center for American Indian Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Robin L Aupperle
- Laureate Institute for Brain Research, Tulsa, OK, USA; Oxley School of Community Medicine, University of Tulsa, Tulsa, OK, USA
| | | | - Jennifer L Stewart
- Laureate Institute for Brain Research, Tulsa, OK, USA; Oxley School of Community Medicine, University of Tulsa, Tulsa, OK, USA
| | - Evan J White
- Laureate Institute for Brain Research, Tulsa, OK, USA; Oxley School of Community Medicine, University of Tulsa, Tulsa, OK, USA.
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Halbout B, Hutson C, Hua L, Inshishian V, Mahler SV, Ostlund SB. Long-term effects of THC exposure on reward learning and motivated behavior in adolescent and adult male rats. Psychopharmacology (Berl) 2023; 240:1151-1167. [PMID: 36933028 PMCID: PMC10102061 DOI: 10.1007/s00213-023-06352-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/03/2023] [Indexed: 03/19/2023]
Abstract
RATIONALE The endocannabinoid system makes critical contributions to reward processing, motivation, and behavioral control. Repeated exposure to THC or other cannabinoid drugs can cause persistent adaptions in the endocannabinoid system and associated neural circuitry. It remains unclear how such treatments affect the way rewards are processed and pursued. OBJECTIVE AND METHODS We examined if repeated THC exposure (5 mg/kg/day for 14 days) during adolescence or adulthood led to long-term changes in rats' capacity to flexibly encode and use action-outcome associations for goal-directed decision making. Effects on hedonic feeding and progressive ratio responding were also assessed. RESULTS THC exposure had no effect on rats' ability to flexibly select actions following reward devaluation. However, instrumental contingency degradation learning, which involves avoiding an action that is unnecessary for reward delivery, was augmented in rats with a history of adult but not adolescent THC exposure. THC-exposed rats also displayed more vigorous instrumental behavior in this study, suggesting a motivational enhancement. A separate experiment found that while THC exposure had no effect on hedonic feeding behavior, it increased rats' willingness to work for food on a progressive ratio schedule, an effect that was more pronounced when THC was administered to adults. Adolescent and adult THC exposure had opposing effects on the CB1 receptor dependence of progressive ratio performance, decreasing and increasing sensitivity to rimonabant-induced behavioral suppression, respectively. CONCLUSIONS Our findings reveal that exposure to a translationally relevant THC exposure regimen induces long-lasting, age-dependent alterations in cognitive and motivational processes that regulate the pursuit of rewards.
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Affiliation(s)
- Briac Halbout
- Department of Anesthesiology and Perioperative Care, School of Medicine, University of California, Irvine, Irvine, CA, 92697, USA.
| | - Collin Hutson
- Department of Anesthesiology and Perioperative Care, School of Medicine, University of California, Irvine, Irvine, CA, 92697, USA
| | - Leann Hua
- Department of Anesthesiology and Perioperative Care, School of Medicine, University of California, Irvine, Irvine, CA, 92697, USA
| | - Victoria Inshishian
- Department of Neurobiology and Behavior, School of Biological Sciences, University of California, Irvine, Irvine, CA, 92697, USA
| | - Stephen V Mahler
- Department of Neurobiology and Behavior, School of Biological Sciences, University of California, Irvine, Irvine, CA, 92697, USA
| | - Sean B Ostlund
- Department of Anesthesiology and Perioperative Care, School of Medicine, University of California, Irvine, Irvine, CA, 92697, USA.
- Department of Neurobiology and Behavior, School of Biological Sciences, University of California, Irvine, Irvine, CA, 92697, USA.
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119
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Guttman Z, Mandelkern M, Ghahremani DG, Kohno M, Dean AC, London ED. Decomposing risky decision-making in methamphetamine use disorder: Behavioral updating and D2 dopamine receptors. Drug Alcohol Depend 2023; 246:109860. [PMID: 37004462 PMCID: PMC10814877 DOI: 10.1016/j.drugalcdep.2023.109860] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/17/2023] [Accepted: 03/25/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND Escalating misuse of amphetamine-type stimulants, mainly methamphetamine, has led to a staggering rise in associated overdose deaths and a pressing need to understand the basis of methamphetamine use disorder (MUD). MUD is characterized by disadvantageous decision-making, and people with MUD perform below controls on the Balloon Analogue Risk Task (BART), a laboratory test of decision-making under uncertainty. The BART presents a series of choices with progressively higher stakes-greater risk of loss and greater potential monetary reward. This research aimed to clarify whether impaired behavioral updating contributes to maladaptive performance on the BART. METHODS Two groups (28 drug-abstinent participants with MUD and 16 healthy control participants) were compared on BART performance. Using a computational model, we deconstructed behavior into risk-taking and behavioral updating. A subset of participants (22 MUD, 15 healthy control) underwent [18F]fallypride positron emission tomography scans to measure dopamine D2-type receptor availability (BPND) in the striatum (caudate and accumbens nuclei and putamen) and the globus pallidus. RESULTS Participants with MUD exhibited slower behavioral updating than the healthy controls (p = 0.0004, d=1.77). BPND in all four bilateral volumes of interest were higher in the healthy control group (ps < 0.005, ds < 2.16), and updating rate correlated positively with BPND in the caudate nucleus (p = 0.002), putamen (p = 0.002), and globus pallidus (p = 0.03). CONCLUSIONS The findings indicate that behavioral updating contributes to maladaptive decision-making in MUD and suggest that dysregulation of D2-type receptor signaling in the striatum and globus pallidus contributes to this behavioral deficit.
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Affiliation(s)
- Zoe Guttman
- Department of Psychiatry and Biobehavioral Sciences and Jane and Terry Semel Institute of Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90024, USA
| | - Mark Mandelkern
- Veterans Administration of Greater Los Angeles Health System, Los Angeles, CA 90073, USA; Department of Physics, University of California at Irvine, Irvine, CA 92697, USA
| | - Dara G Ghahremani
- Department of Psychiatry and Biobehavioral Sciences and Jane and Terry Semel Institute of Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90024, USA
| | - Milky Kohno
- Department of Psychiatry, Oregon Health & Science University, Oregon Health Sciences University, Portland, OR 97239, USA
| | - Andy C Dean
- Department of Psychiatry and Biobehavioral Sciences and Jane and Terry Semel Institute of Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90024, USA
| | - Edythe D London
- Department of Psychiatry and Biobehavioral Sciences and Jane and Terry Semel Institute of Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90024, USA; Veterans Administration of Greater Los Angeles Health System, Los Angeles, CA 90073, USA; Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, CA 90024, USA; Brain Research Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90024, USA.
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Strelnikov K, Debladis J, Salles J, Valette M, Cortadellas J, Tauber M, Barone P. Amygdala hyperactivation relates to eating behaviour: a potential indicator of food addiction in Prader-Willi syndrome. Brain Commun 2023; 5:fcad138. [PMID: 37168732 PMCID: PMC10165245 DOI: 10.1093/braincomms/fcad138] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/26/2023] [Accepted: 04/26/2023] [Indexed: 05/13/2023] Open
Abstract
Prader-Willi syndrome is a rare neurodevelopmental genetic disorder characterized by various endocrine, cognitive and behavioural problems. The symptoms include an obsession for food and reduced satiety, which leads to hyperphagia and morbid obesity. Neuropsychological studies have reported that Prader-Willi patients display altered social interactions with a specific weakness in interpreting social information and responding to them, a symptom close to that observed in autism spectrum disorders. In the present case-control study, we hypothesized that brain regions associated with compulsive eating behaviour would be abnormally activated by food-related odours in Prader-Willi syndrome, as these can stimulate the appetite and induce hunger-related behaviour. We conducted a brain imaging study using the olfactory modality because odours have a high-hedonic valence and can cause stronger emotional reactions than other modalities. Further, the olfactory system is also intimately associated with the endocrine regulation of energy balance and is the most appropriate modality for studies of Prader-Willi syndrome. A total of 16 Prader-Willi participants were recruited for this study, which is a significant achievement given the low incidence rate of this rare disease. The second group of 11 control age-matched subjects also participated in the brain imaging study. In the MRI scanner, using an MRI-compatible olfactometer during 56 block sessions, we randomly presented two odours (tulip and caramel), which have different hedonic valence and a different capacity to arouse hunger-related behaviour. Our results demonstrate that Prader-Willi participants have abnormal activity in the brain reward system that regulates eating behaviour. Indeed, we found that these patients had right amygdala activity up to five times higher in response to a food odour (caramel) compared with the tulip odour. In contrast, age-matched control participants had similar activity levels in response to both odours. The amygdala activity levels were found to be associated with the severity of the hyperphagia in Prader-Willi patients. Our results provide evidence for functional alteration of the right amygdala in Prader-Willi syndrome, which is part of the brain network involved in food addiction modulated by the ghrelin and oxytocin systems, which may drive the hyperphagia. Our study provides important new insights into the functioning of emotion-related brain circuits and pathology, and it is one of the few to explore the dysfunction of the neural circuits involved in emotion and addiction in Prader-Willi syndrome. It suggests new directions for the exploration and remediation of addictive behaviours.
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Affiliation(s)
- Kuzma Strelnikov
- Brain & Cognition Research Center (CerCo), University of Toulouse Paul Sabatier, Toulouse 31052, France
- Brain & Cognition Research Center (CerCo), CNRS, Toulouse 31052, France
- ENT Department, Purpan Hospital, Toulouse 31059, France
| | - Jimmy Debladis
- Brain & Cognition Research Center (CerCo), University of Toulouse Paul Sabatier, Toulouse 31052, France
- Brain & Cognition Research Center (CerCo), CNRS, Toulouse 31052, France
| | - Juliette Salles
- Department of Psychiatry, University Hospital of Toulouse, CHU, Toulouse 31059, France
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity) INSERM UMR1291 - CNRS UMR5051, Université Toulouse III, Toulouse 31024, France
| | - Marion Valette
- Prader-Willi Syndrome Reference Center, Children's Hospital-INSERM-University of Toulouse Paul Sabatier, Toulouse 31059, France
| | - Julie Cortadellas
- Prader-Willi Syndrome Reference Center, Children's Hospital-INSERM-University of Toulouse Paul Sabatier, Toulouse 31059, France
| | - Maithé Tauber
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity) INSERM UMR1291 - CNRS UMR5051, Université Toulouse III, Toulouse 31024, France
- Prader-Willi Syndrome Reference Center, Children's Hospital-INSERM-University of Toulouse Paul Sabatier, Toulouse 31059, France
| | - Pascal Barone
- Brain & Cognition Research Center (CerCo), University of Toulouse Paul Sabatier, Toulouse 31052, France
- Brain & Cognition Research Center (CerCo), CNRS, Toulouse 31052, France
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Rodríguez-Borillo O, Roselló-Jiménez L, Guarque-Chabrera J, Palau-Batet M, Gil-Miravet I, Pastor R, Miquel M, Font L. Neural correlates of cocaine-induced conditioned place preference in the posterior cerebellar cortex. Front Behav Neurosci 2023; 17:1174189. [PMID: 37179684 PMCID: PMC10169591 DOI: 10.3389/fnbeh.2023.1174189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 04/06/2023] [Indexed: 05/15/2023] Open
Abstract
Introduction Addictive drugs are potent neuropharmacological agents capable of inducing long-lasting changes in learning and memory neurocircuitry. With repeated use, contexts and cues associated with consumption can acquire motivational and reinforcing properties of abused drugs, triggering drug craving and relapse. Neuroplasticity underlying drug-induced memories takes place in prefrontal-limbic-striatal networks. Recent evidence suggests that the cerebellum is also involved in the circuitry responsible for drug-induced conditioning. In rodents, preference for cocaine-associated olfactory cues has been shown to correlate with increased activity at the apical part of the granular cell layer in the posterior vermis (lobules VIII and IX). It is important to determine if the cerebellum's role in drug conditioning is a general phenomenon or is limited to a particular sensory modality. Methods The present study evaluated the role of the posterior cerebellum (lobules VIII and IX), together with the medial prefrontal cortex (mPFC), ventral tegmental area (VTA), and nucleus accumbens (NAc) using a cocaine-induced conditioned place preference procedure with tactile cues. Cocaine CPP was tested using ascending (3, 6, 12, and 24 mg/kg) doses of cocaine in mice. Results Compared to control groups (Unpaired and Saline animals), Paired mice were able to show a preference for the cues associated with cocaine. Increased activation (cFos expression) of the posterior cerebellum was found in cocaine CPP groups and showed a positive correlation with CPP levels. Such increases in cFos activity in the posterior cerebellum significantly correlated with cFos expression in the mPFC. Discussion Our data suggest that the dorsal region of the cerebellum could be an important part of the network that mediates cocaine-conditioned behavior.
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Affiliation(s)
| | | | - Julian Guarque-Chabrera
- Área de Psicobiología, Universitat Jaume I, Castellón de la Plana, Spain
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States
| | - María Palau-Batet
- Área de Psicobiología, Universitat Jaume I, Castellón de la Plana, Spain
| | - Isis Gil-Miravet
- Unitat Predepartamental de Medicina, Universitat Jaume I, Castellón de la Plana, Spain
| | - Raúl Pastor
- Área de Psicobiología, Universitat Jaume I, Castellón de la Plana, Spain
| | - Marta Miquel
- Área de Psicobiología, Universitat Jaume I, Castellón de la Plana, Spain
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States
| | - Laura Font
- Área de Psicobiología, Universitat Jaume I, Castellón de la Plana, Spain
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122
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Ceceli AO, Huang Y, Kronberg G, Malaker P, Miller P, King SG, Gaudreault PO, McClain N, Gabay L, Vasa D, Newcorn JH, Ekin D, Alia-Klein N, Goldstein RZ. Common and distinct fronto-striatal volumetric changes in heroin and cocaine use disorders. Brain 2023; 146:1662-1671. [PMID: 36200376 PMCID: PMC10319776 DOI: 10.1093/brain/awac366] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/11/2022] [Accepted: 09/08/2022] [Indexed: 12/30/2022] Open
Abstract
Different drugs of abuse impact the morphology of fronto-striatal dopaminergic targets in both common and unique ways. While dorsal striatal volume tracks with addiction severity across drug classes, opiates impact ventromedial prefrontal cortex (vmPFC) and nucleus accumbens (NAcc) neuroplasticity in preclinical models, and psychostimulants alter inhibitory control, rooted in cortical regions such as the inferior frontal gyrus (IFG). We hypothesized parallel grey matter volume changes associated with human heroin or cocaine use disorder: lower grey matter volume of vmPFC/NAcc in heroin use disorder and IFG in cocaine use disorder, and putamen grey matter volume to be associated with addiction severity measures (including craving) across both. In this cross-sectional study, we quantified grey matter volume (P < 0.05-corrected) in age/sex/IQ-matched individuals with heroin use disorder (n = 32, seven females), cocaine use disorder (n = 32, six females) and healthy controls (n = 32, six females) and compared fronto-striatal volume between groups using voxel-wise general linear models and non-parametric permutation-based tests. Overall, individuals with heroin use disorder had smaller vmPFC and NAcc/putamen volumes than healthy controls. Bilateral lower IFG grey matter volume patterns were specifically evident in cocaine versus heroin use disorders. Correlations between addiction severity measures and putamen grey matter volume did not reach nominal significance level in this sample. These results indicate alterations in dopamine-innervated regions (in the vmPFC and NAcc) in heroin addiction. For the first time we demonstrate lower IFG grey matter volume specifically in cocaine compared with heroin use disorder, suggesting a signature of reduced inhibitory control, which remains to be tested directly using select behavioural measures. Overall, results suggest substance-specific volumetric changes in human psychostimulant or opiate addiction, with implications for fine-tuning biomarker and treatment identification by primary drug of abuse.
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Affiliation(s)
- Ahmet O Ceceli
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Yuefeng Huang
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Greg Kronberg
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Pias Malaker
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Pazia Miller
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sarah G King
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | | | - Natalie McClain
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Lily Gabay
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Devarshi Vasa
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jeffrey H Newcorn
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Defne Ekin
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Nelly Alia-Klein
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Rita Z Goldstein
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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Kahnt T. Computationally Informed Interventions for Targeting Compulsive Behaviors. Biol Psychiatry 2023; 93:729-738. [PMID: 36464521 PMCID: PMC9989040 DOI: 10.1016/j.biopsych.2022.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/04/2022] [Accepted: 08/30/2022] [Indexed: 11/02/2022]
Abstract
Compulsive behaviors are central to addiction and obsessive-compulsive disorder and can be understood as a failure of adaptive decision making. Particularly, they can be conceptualized as an imbalance in behavioral control, such that behavior is guided predominantly by learned rather than inferred outcome expectations. Inference is a computational process required for adaptive behavior, and recent work across species has identified the neural circuitry that supports inference-based decision making. This includes the orbitofrontal cortex, which has long been implicated in disorders of compulsive behavior. Inspired by evidence that modulating orbitofrontal cortex activity can alter inference-based behaviors, here we discuss noninvasive approaches to target these circuits in humans. Specifically, we discuss the potential of network-targeted transcranial magnetic stimulation and real-time neurofeedback to modulate the neural underpinnings of inference. Both interventions leverage recent advances in our understanding of the neurocomputational mechanisms of inference-based behavior and may be used to complement current treatment approaches for behavioral disorders.
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Affiliation(s)
- Thorsten Kahnt
- National Institute on Drug Abuse Intramural Research Program, Baltimore, Maryland.
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124
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Claypool SM, Reiner DJ, Behdin S, Orihuel J, Batista A, Caldwell KE, Chow JJ, Bossert JM, Rubio FJ, Hope BT, Shaham Y. Role of Piriform Cortex and Its Afferent Projections in Relapse to Fentanyl Seeking after Food Choice-Induced Voluntary Abstinence. J Neurosci 2023; 43:2597-2614. [PMID: 36898838 PMCID: PMC10082459 DOI: 10.1523/jneurosci.0034-23.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 03/12/2023] Open
Abstract
We previously demonstrated a role of piriform cortex (Pir) in relapse to fentanyl seeking after food choice-induced voluntary abstinence. Here, we used this model to further study the role of Pir and its afferent projections in fentanyl relapse. We trained male and female rats to self-administer palatable food pellets for 6 d (6 h/day) and fentanyl (2.5 µg/kg/infusion, i.v.) for 12 d (6 h/day). We assessed relapse to fentanyl seeking after 12 voluntary abstinence sessions, achieved through a discrete choice procedure between fentanyl and palatable food (20 trials/session). We determined projection-specific activation of Pir afferents during fentanyl relapse with Fos plus the retrograde tracer cholera toxin B (injected into Pir). Fentanyl relapse was associated with increased Fos expression in anterior insular cortex (AI) and prelimbic cortex (PL) neurons projecting to Pir. We next used an anatomical disconnection procedure to determine the causal role of these two projections (AI→Pir and PL→Pir) in fentanyl relapse. Contralateral but not ipsilateral disconnection of AI→Pir projections decreased fentanyl relapse but not reacquisition of fentanyl self-administration. In contrast, contralateral but not ipsilateral disconnection of PL→Pir projections modestly decreased reacquisition but not relapse. Fluorescence-activated cell sorting and quantitative PCR data showed molecular changes within Pir Fos-expressing neurons associated with fentanyl relapse. Finally, we found minimal or no sex differences in fentanyl self-administration, fentanyl versus food choice, and fentanyl relapse. Our results indicate that AI→Pir and PL→Pir projections play dissociable roles in nonreinforced relapse to fentanyl seeking versus reacquisition of fentanyl self-administration after food choice-induced voluntary abstinence.SIGNIFICANCE STATEMENT We previously showed a role of Pir in fentanyl relapse after food choice-induced voluntary abstinence in rats, a procedure mimicking human abstinence or a significant reduction in drug self-administration because of the availability of alternative nondrug rewards. Here, we aimed to further characterize the role of Pir in fentanyl relapse by investigating the role of Pir afferent projections and analyzing molecular changes in relapse-activated Pir neurons. We identified dissociable roles of two Pir afferent projections (AI→Pir and PL→Pir) in relapse to fentanyl seeking versus reacquisition of fentanyl self-administration after voluntary abstinence. We also characterized molecular changes within Pir Fos-expressing neurons associated with fentanyl relapse.
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Affiliation(s)
- Sarah M Claypool
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - David J Reiner
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Sana Behdin
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Javier Orihuel
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Ashley Batista
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Kiera E Caldwell
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Jonathan J Chow
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Jennifer M Bossert
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - F Javier Rubio
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Bruce T Hope
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
| | - Yavin Shaham
- Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224
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Rigoli F, Pezzulo G. The traps of adaptation: Addiction as maladaptive referent-dependent evaluation. COGNITIVE, AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2023:10.3758/s13415-023-01086-4. [PMID: 37016202 PMCID: PMC10400707 DOI: 10.3758/s13415-023-01086-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/03/2023] [Indexed: 04/06/2023]
Abstract
Referent-dependent evaluation theories propose that the ongoing context influences how the brain attributes value to stimuli. What are the implications of these theories for understanding addiction? The paper asks this question by casting this disorder as a form of maladaptive referent-dependent evaluation. Specifically, addiction is proposed to arise from the establishment of an excessive reference point following repeated drug consumption. Several key aspects of the disorder emerge from this perspective, including withdrawal, tolerance, enhanced craving, negative mood, and diminished stimulus discriminability. As highlighted in the paper, this formulation has important analogies with classical accounts of addiction, such as set point theories and associative learning theories. Moreover, this picture fits with the pattern of striatal dopaminergic activity observed in addiction, a key neural signature of the disorder. Overall, the referent-dependent evaluation approach emerges as a useful add-on to the theoretical toolkit adopted to interpret addiction. This also supports the idea that referent-dependent evaluation might offer a general framework to understand various disorders characterised by disrupted motivation.
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Affiliation(s)
- Francesco Rigoli
- Department of Psychology, City, University of London, Northampton Square, London, EC1V 0HB, UK.
| | - Giovanni Pezzulo
- Institute of Cognitive Sciences and Technologies, National Research Council of Italy, Rome, Italy
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126
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Fusaroli M, Pellegrini L, Fusaroli R, Raschi E, Menchetti M, Poluzzi E. Behavioral excess and disruptive conduct: A historical and taxonomic approach to the origin of the 'impulse control disorders' diagnostic construct. Addiction 2023; 118:763-770. [PMID: 36370093 DOI: 10.1111/add.16086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 10/21/2022] [Indexed: 11/15/2022]
Abstract
AIMS Impulse control disorders (ICDs) are iatrogenic and idiopathic conditions with psychosocial and economic consequences for the affected individuals and their families (e.g. bankruptcy and divorce). However, the definition of ICDs has changed over time, and ICDs are not consistently included within existing taxonomies. We discuss the origins of the ICD diagnostic construct and its unsolved tensions. METHODS To contextualize the ICD diagnostic construct, we provided an overview of its origins in past centuries and followed its development across multiple editions of the Diagnostic and Statistical Manual and the International Classification of Diseases, as well as its definition within emerging ontologies. RESULTS Two independent roots of the ICD construct emerged: (a) the interest in behavioral excess as expressed in encyclopedic compilations (18th century) and (b) the juridical debate on disruptive conduct and responsibility (19th-20th centuries). These roots underlie the repeated taxonomic remodeling observed throughout the 20th and 21st centuries and three critical issues persisting in both clinical practice and research. First, the number of ICDs keeps increasing across the spectrum of human behaviors, disregarding common pathogenetic and phenomenological grounds. Secondly, ICDs substantially overlap with other mental conditions. Impulsivity is often neglected as a minor inconvenience or side effect when co-occurring with major diagnoses (e.g. depression) and therefore inadequately managed. Finally, ICDs' definitions display an unsolved tension between being conceived as hobby, moral fault or pathological drive, which may be responsible for stigma and delayed intervention. CONCLUSION The reasons that made impulse control disorders (ICDs) difficult to define from their first conceptualization are the same reasons that now complicate taxonomic efforts and diagnosis. Tracing back ICDs' roots and criticalities can help to define a common and less ambiguous theoretical framework, which may also result in the demise of the ICD construct and a move towards more clearly defined and more useful ontologies.
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Affiliation(s)
- Michele Fusaroli
- Pharmacology Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Luca Pellegrini
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK.,Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Riccardo Fusaroli
- The Interacting Minds Center, School of Culture and Society, Aarhus University, Aarhus, Denmark.,Department of Linguistics, Cognitive Science and Semiotics, Aarhus University, Aarhus, Denmark
| | - Emanuel Raschi
- Pharmacology Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Marco Menchetti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Elisabetta Poluzzi
- Pharmacology Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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127
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Hales CA, Clark L, Winstanley CA. Computational approaches to modeling gambling behaviour: Opportunities for understanding disordered gambling. Neurosci Biobehav Rev 2023; 147:105083. [PMID: 36758827 DOI: 10.1016/j.neubiorev.2023.105083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/05/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023]
Abstract
Computational modeling has become an important tool in neuroscience and psychiatry research to provide insight into the cognitive processes underlying normal and pathological behavior. There are two modeling frameworks, reinforcement learning (RL) and drift diffusion modeling (DDM), that are well-developed in cognitive science, and have begun to be applied to Gambling Disorder. RL models focus on explaining how an agent uses reward to learn about the environment and make decisions based on outcomes. The DDM is a binary choice framework that breaks down decision making into psychologically meaningful components based on choice reaction time analyses. Both approaches have begun to yield insight into aspects of cognition that are important for, but not unique to, gambling, and thus relevant to the development of Gambling Disorder. However, these approaches also oversimplify or neglect various aspects of decision making seen in real-world gambling behavior. Gambling Disorder presents an opportunity for 'bespoke' modeling approaches to consider these neglected components. In this review, we discuss studies that have used RL and DDM frameworks to investigate some of the key cognitive components in gambling and Gambling Disorder. We also include an overview of Bayesian models, a methodology that could be useful for more tailored modeling approaches. We highlight areas in which computational modeling could enable progression in the investigation of the cognitive mechanisms relevant to gambling.
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Affiliation(s)
- C A Hales
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada; Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada.
| | - L Clark
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada; Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
| | - C A Winstanley
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, British Columbia, Canada; Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
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128
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Dampuré J, Agudelo-Orjuela P, van der Meij M, Belin D, Barber HA. Electrophysiological signature of the interplay between habits and inhibition in response to smoking-related cues in individuals with a smoking habit: An event-related potential study. Eur J Neurosci 2023; 57:1335-1352. [PMID: 36829295 PMCID: PMC10946726 DOI: 10.1111/ejn.15942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 01/24/2023] [Accepted: 02/17/2023] [Indexed: 02/26/2023]
Abstract
The rigid, stimulus-bound nature of drug seeking that characterizes substance use disorder (SUD) has been related to a dysregulation of motivational and early attentional reflexive and inhibitory reflective systems. However, the mechanisms by which these systems are engaged by drug-paired conditioned stimuli (CSs) when they promote the enactment of seeking habits in individuals with a SUD have not been elucidated. The present study aimed behaviourally and electrophysiologically to characterize the nature of the interaction between the reflexive and reflective systems recruited by CSs in individuals with a smoking habit. We measured the behavioural performance and associated event-related potentials (ERPs) of 20 individuals with a smoking habit and 20 controls, who never smoked regularly, in a modified Go/NoGo task during which smoking-related CSs, appetitive and neutral pictures, presented either in first or third-person visual perspective were displayed 250 ms before the Go/NoGo cue. We show that smoking-related cues selectively influence early incentive motivation-related attention bias (N2 after picture onset), motor readiness and behavioural inhibition (Go-P3, NoGo-P3 and Pc) of individuals with a smoking habit only when presented from a first-person visual perspective. These data together identify the neural signature of the aberrant engagement of the reflexive and reflective systems during the recruitment of an incentive habit by CSs presented as if they had been response-produced, that is, as conditioned reinforcers.
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Affiliation(s)
- Julien Dampuré
- Facultad de Psicología, Universidad de La Sabana, Chía, Colombia
- Instituto Universitario de Neurociencia (IUNE), Universidad de La Laguna (ULL), Tenerife, Spain
- Faculté de Psychologie, Université Catholique de l'Ouest, 79500, Niort, France
| | - Paola Agudelo-Orjuela
- Instituto Universitario de Neurociencia (IUNE), Universidad de La Laguna (ULL), Tenerife, Spain
- Universidad Externado de Colombia, Bogotá, Colombia
| | - Maartje van der Meij
- Departamento de Psicología Cognitiva, Universidad de La Laguna (ULL), Tenerife, Spain
| | - David Belin
- Department of Psychology, University of Cambridge, Cambridge, UK
| | - Horacio A Barber
- Instituto Universitario de Neurociencia (IUNE), Universidad de La Laguna (ULL), Tenerife, Spain
- Departamento de Psicología Cognitiva, Universidad de La Laguna (ULL), Tenerife, Spain
- Basque Center on Cognition, Brain and Language (BCBL), Donostia-San Sebastián, Spain
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129
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Larsen H, Wiers RW, Su S, Cousijn J. Excessive smartphone use and addiction: When harms start outweighing benefits. Addiction 2023; 118:586-588. [PMID: 36241358 DOI: 10.1111/add.16060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helle Larsen
- Addiction, Development and Psychopathology (ADAPT) Laboratory, Department of Developmental Psychology, University of Amsterdam, Amsterdam, the Netherlands.,Centre for Urban Mental Health, University of Amsterdam, Amsterdam, the Netherlands
| | - Reinout W Wiers
- Addiction, Development and Psychopathology (ADAPT) Laboratory, Department of Developmental Psychology, University of Amsterdam, Amsterdam, the Netherlands.,Centre for Urban Mental Health, University of Amsterdam, Amsterdam, the Netherlands
| | - Shuang Su
- Addiction, Development and Psychopathology (ADAPT) Laboratory, Department of Developmental Psychology, University of Amsterdam, Amsterdam, the Netherlands
| | - Janna Cousijn
- Neuroscience of Addiction (NofA) Laboratory, Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands
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Awinashe MV, Jain A, Santhosh VC, Choudhury BK, Alessa N, Babaji P. Smartphone addiction and its impact on knowledge, cognitive and psychomotor skills among dental students in India: An observational study. JOURNAL OF EDUCATION AND HEALTH PROMOTION 2023; 12:77. [PMID: 37288416 PMCID: PMC10243427 DOI: 10.4103/jehp.jehp_1330_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/21/2022] [Indexed: 06/09/2023]
Abstract
BACKGROUND Addictive behavior toward the use of smartphones has turned out to be a commonly present phenomenon in this digital era. An individual's overindulgence in smartphone devices has turned into an obsessive and compulsive disorder. This addiction has been found to influence the physical, social, and psychological wellbeing of the studied population. This observational study aimed to assess smartphone addiction and its impact on knowledge, cognitive, and psychomotor skills in students pursuing dentistry in India. MATERIALS AND METHODS This prospective and cross-sectional survey-based study comprised 100 dental undergraduate students who were selected by a random sampling technique. The age range of subjects ranged between 18 and 22 years with equal gender distribution (50 each male and female). A prevalidated questionnaire containing 30 items encompassing five variables, that is, applications related to healthcare, entertainment, shopping, communication, and education were used to assess the response. Based on scores, patients were categorized as addicted or with no addiction. For evaluating the knowledge, cognitive, and psychomotor skills of students, theory-based examinations were held in different subjects as per the semester year of selected students while psychomotor skills were assessed by conducting clinical or preclinical examinations conducted by two separate examiners who following mutual agreement were assigned appropriate scores. All scores were categorized into four grades, that is, from grades I to VI. RESULTS Students with smartphone addiction exhibited lower performance in both theory-based and clinical/preclinical assessment examinations with a majority of them scoring grade III or IV. CONCLUSION Smartphone addiction reduces the academic knowledge, cognitive, and psychomotor skills of dental students.
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Affiliation(s)
- Minal V Awinashe
- Department of Oral Surgery and Diagnostic Sciences, College of Dentistry, Qassim University, Buraidah, Kingdom of Saudi Arabia
| | - Amol Jain
- Reader, Department of Oral Pathology, Sardar Patel Post Graduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
| | - V C Santhosh
- Department of Periodontics, KMCT Dental College, Kerala, India
| | - Basanta K Choudhury
- Department of Oral Medicine and Radiology, IDS, Sum Hospital, Soa University, Kalinganagar, Bhubaneswar, Odisha, India
| | - Noura Alessa
- Department of Pediatric Dentistry and Orthodontics, Dental College, King Saud University, Riyadh, Saudi Arabia
| | - Prashant Babaji
- Department of Pediatric Dentistry, Sharavathi Dental College, Shivamogga, Karnataka, India
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Symptoms, Mechanisms, and Treatments of Video Game Addiction. Cureus 2023; 15:e36957. [PMID: 37009362 PMCID: PMC10065366 DOI: 10.7759/cureus.36957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2023] [Indexed: 04/03/2023] Open
Abstract
Video game addiction is defined as the steady and repetitive use of the Internet to play games frequently with different gamers, potentially leading to negative consequences in many aspects of life. As recent technological development has given easy access to gaming on many devices, video game addiction has become a serious public health issue with increased prevalence. Many studies have shown that video game addiction leads to changes in the brain that are similar to those that occur in substance addiction and gambling. Evidence has also shown that there is an association between video game addiction and depression, as well as other psychological and social problems. In light of these issues, our review article aims to increase awareness of video game addiction in society. The main objectives of this review are as follows: to describe the mechanism of addiction, to consider whether video game addiction is a real addiction, and to highlight the signs and symptoms of addiction. In addition, we identify the consequences of video game addiction and possible treatments for addicts. The information was extracted from high-quality research papers and reliable websites like PubMed and ScienceDirect.
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132
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Wang AR, Kuijper FM, Barbosa DAN, Hagan KE, Lee E, Tong E, Choi EY, McNab JA, Bohon C, Halpern CH. Human habit neural circuitry may be perturbed in eating disorders. Sci Transl Med 2023; 15:eabo4919. [PMID: 36989377 DOI: 10.1126/scitranslmed.abo4919] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 03/03/2023] [Indexed: 03/31/2023]
Abstract
Circuit-based mechanisms mediating the development and execution of habitual behaviors involve complex cortical-striatal interactions that have been investigated in animal models and more recently in humans. However, how human brain circuits implicated in habit formation may be perturbed in psychiatric disorders remains unclear. First, we identified the locations of the sensorimotor putamen and associative caudate in the human brain using probabilistic tractography from Human Connectome Project data. We found that multivariate connectivity of the sensorimotor putamen was altered in humans with binge eating disorder and bulimia nervosa and that the degree of alteration correlated with severity of disordered eating behavior. Furthermore, the extent of this circuit aberration correlated with mean diffusivity in the sensorimotor putamen and decreased basal dopamine D2/3 receptor binding potential in the striatum, consistent with previously reported microstructural changes and dopamine signaling mediating habit learning in animal models. Our findings suggest a neural circuit that links habit learning and binge eating behavior in humans, which could, in part, explain the treatment-resistant behavior common to eating disorders and other psychiatric conditions.
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Affiliation(s)
- Allan R Wang
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Fiene Marie Kuijper
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
- Université Paris Cité, Paris 75006, France
- Assistance Publique des Hôpitaux de Paris, Paris 75012, France
| | - Daniel A N Barbosa
- Department of Neurosurgery, Perelman School of Medicine, Richards Medical Research Laboratories, Pennsylvania Hospital, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kelsey E Hagan
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Eric Lee
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Elizabeth Tong
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, 94305 USA
| | - Eun Young Choi
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jennifer A McNab
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, 94305 USA
| | - Cara Bohon
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Casey H Halpern
- Department of Neurosurgery, Perelman School of Medicine, Richards Medical Research Laboratories, Pennsylvania Hospital, University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Surgery, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104, USA
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Kang JWM, Keay KA, Kendig MD, Corbit LH, Mor D. Serotonin and Dopamine Show Different Response Profiles to Acute Stress in the Nucleus Accumbens and Medial Prefrontal Cortex of Rats with Neuropathic Pain. Neurochem Res 2023; 48:2265-2280. [PMID: 36941432 PMCID: PMC10182167 DOI: 10.1007/s11064-023-03906-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 02/23/2023] [Accepted: 03/03/2023] [Indexed: 03/23/2023]
Abstract
The ability to adaptively guide behaviour requires the integration of external information with internal motivational factors. Decision-making capabilities can be impaired by acute stress and is often exacerbated by chronic pain. Chronic neuropathic pain patients often present with cognitive dysfunction, including impaired decision-making. The mechanisms underlying these changes are not well understood but may include altered monoaminergic transmission in the brain. In this study we investigated the relationships between dopamine, serotonin, and their metabolites in key brain regions that regulate motivated behaviour and decision-making. The neurochemical profiles of the medial prefrontal cortex, orbital prefrontal cortex, and nucleus accumbens were analysed using HPLC in rats that received a chronic constriction injury (CCI) of the right sciatic nerve and an acute stress (15-min restraint), prior to an outcome devaluation task. CCI alone significantly decreased dopamine but not serotonin concentrations in the medial prefrontal cortex. By contrast, restraint stress acutely increased dopamine in the medial prefrontal cortex, and the nucleus accumbens; and increased serotonin in the medial prefrontal cortex 2 h later. The sustained dopaminergic and serotonergic responses to acute stress highlight the importance of an animal's ability to mount an effective coping response. In addition, these data suggest that the impact of nerve injury and acute stress on outcome-devaluation occurs independently of dopaminergic and serotonergic transmission in the medial prefrontal cortex, orbital prefrontal cortex and nucleus accumbens of rats.
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Affiliation(s)
- James W M Kang
- School of Medical Sciences [Neuroscience], The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Kevin A Keay
- School of Medical Sciences [Neuroscience], The University of Sydney, Sydney, NSW, 2006, Australia
| | - Michael D Kendig
- School of Life Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Laura H Corbit
- Department of Psychology, The University of Toronto, Toronto, ON, M5S 3G3, Canada
| | - David Mor
- School of Medical Sciences [Neuroscience], The University of Sydney, Sydney, NSW, 2006, Australia
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Chen K, Schlagenhauf F, Sebold M, Kuitunen-Paul S, Chen H, Huys QJM, Heinz A, Smolka MN, Zimmermann US, Garbusow M. The Association of Non-Drug-Related Pavlovian-to-Instrumental Transfer Effect in Nucleus Accumbens With Relapse in Alcohol Dependence: A Replication. Biol Psychiatry 2023; 93:558-565. [PMID: 38426251 DOI: 10.1016/j.biopsych.2022.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 07/12/2022] [Accepted: 09/16/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND The Pavlovian-to-instrumental transfer (PIT) paradigm measures the effects of Pavlovian conditioned cues on instrumental behavior in the laboratory. A previous study conducted by our research group observed activity in the left nucleus accumbens (NAcc) elicited by a non-drug-related PIT task across patients with alcohol dependence (AD) and healthy control subjects, and the left NAcc PIT effect differentiated patients who subsequently relapsed from those who remained abstinent. In this study, we aimed to examine whether such effects were present in a larger sample collected at a later date. METHODS A total of 129 recently detoxified patients with AD (21 females) and 74 healthy, age- and gender-matched control subjects (12 females) performing a PIT task during functional magnetic resonance imaging were examined. After task assessments, patients were followed for 6 months. Forty-seven patients relapsed and 37 remained abstinent. RESULTS We found a significant behavioral non-drug-related PIT effect and PIT-related activity in the NAcc across all participants. Moreover, subsequent relapsers showed stronger behavioral and left NAcc PIT effects than abstainers. These findings are consistent with our previous findings. CONCLUSIONS Behavioral non-drug-related PIT and neural PIT correlates are associated with prospective relapse risk in AD. This study replicated previous findings and provides evidence for the clinical relevance of PIT mechanisms to treatment outcome in AD. The observed difference between prospective relapsers and abstainers in the NAcc PIT effect in our study is small overall. Future studies are needed to further elucidate the mechanisms and the possible modulators of neural PIT in relapse in AD.
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Affiliation(s)
- Ke Chen
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
| | - Florian Schlagenhauf
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Miriam Sebold
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Department for Social and Preventive Medicine, University of Potsdam, Potsdam, Germany
| | - Sören Kuitunen-Paul
- Department of Child and Adolescent Psychiatry, Technische Universität Dresden, Dresden, Germany; Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany
| | - Hao Chen
- Department of Psychiatry, Technische Universität Dresden, Dresden, Germany
| | - Quentin J M Huys
- Division of Psychiatry, University College London, London, United Kingdom; Max Planck UCL Centre for Computational Psychiatry and Ageing Research, University College London, London, United Kingdom
| | - Andreas Heinz
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Michael N Smolka
- Department of Psychiatry, Technische Universität Dresden, Dresden, Germany
| | - Ulrich S Zimmermann
- University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany; Department of Addiction Medicine and Psychotherapy, kbo Isar-Amper-Klinikum Region München, Germany
| | - Maria Garbusow
- Department of Psychiatry and Psychotherapy, Charité Campus Mitte, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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135
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Eating Compulsivity in Inpatients with Severe Obesity and the General Population: The Italian Version of the Measure of Eating Compulsivity (MEC10-IT). Nutrients 2023; 15:nu15061378. [PMID: 36986106 PMCID: PMC10052425 DOI: 10.3390/nu15061378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023] Open
Abstract
This study aimed to validate and investigate the psychometric properties of the Italian version of the Measure of Eating Compulsivity-10 (MEC10-IT) in a sample of inpatients with severe obesity (Study 1), and to test the measurement invariance of the measure across non-clinical and clinical samples (Study 2). In the first study, a confirmatory factorial analysis (CFA) was conducted among 452 patients in order to confirm the factorial structure of the MEC10-IT. In the second study, the psychometric properties of the MEC10-IT were tested on 453 inpatients with severe obesity and a community sample of 311 participants. The CFA confirmed the factorial structure of the MEC10-IT among an Italian sample of adult inpatients with severe obesity (Study 1). The MEC10-IT was also demonstrated to be invariant between the clinical and the community sample and to possess good psychometric properties, as well as excellent screening abilities for classifying individuals with problematic eating behaviors (Study 2). In conclusion, the MEC10-IT could be considered as a valid and reliable tool for the assessment of compulsive eating in both non-clinical and clinical samples and represents a psychometrically sound measure for clinical and research purposes.
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136
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Korponay C. Snapping Out of Autopilot: Overriding Habits in Real Time and the Role of Ventrolateral Prefrontal Cortex. PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2023; 18:482-490. [PMID: 36137178 PMCID: PMC10023494 DOI: 10.1177/17456916221120033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Habits allow environmental and interoceptive cues to trigger behavior in an automatized fashion, making them liable to deployment in inappropriate or outdated contexts. Over the long term, repeated failure of a once-adaptive habit to satisfy current goals produces extinction learning that suppresses the habit's execution. Less attention has been afforded to the mechanisms underlying real-time habit suppression: the capacity to stop the execution of a cued habit that is goal conflicting. Here, I first posit a model by which goal-relevant stimuli can (a) bring unfolding habits and their projected outcomes into awareness, (b) prompt evaluation of the habit outcome with respect to current goals, and (c) trigger cessation of the habit response if it is determined to be goal conflicting. Second, I propose a modified stop-signal task to test this model of goal-directed stopping of habit execution. Finally, I marshal evidence indicating that the ventrolateral prefrontal cortex, situated at the nexus of salience detection, action-plan assessment, and motor inhibition networks, is uniquely positioned to coordinate the overriding of habitual behaviors in real time. In sum, this perspective presents a testable model and candidate neurobiological substrate for our capacity to "snap out of autopilot" and override goal-conflicting habits in real time.
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Affiliation(s)
- Cole Korponay
- Basic Neuroscience Division, McLean Hospital, Belmont, Massachusetts.,Department of Psychiatry, Harvard Medical School, Harvard University
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137
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Watson P, Mahlberg J. Mechanisms underlying performance in a cued go/no-go Pavlovian-to-instrumental transfer paradigm. Behav Brain Res 2023; 446:114413. [PMID: 37001819 DOI: 10.1016/j.bbr.2023.114413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023]
Abstract
Environmental cues that remind us of rewarding outcomes (drugs, food) play a significant role in addiction relapse. In the lab the Pavlovian-to-instrumental transfer (PIT) task has been used to formally examine how cues associated with reward or punishment can bias ongoing instrumental responding. Using a version of this paradigm that integrates PIT with a go/no-go task many studies have related stronger PIT effects (with non-drug rewards) to problematic alcohol use including risky alcohol users relative to non-risky drinkers, individuals with alcohol dependence versus healthy controls and individuals in recovery from alcohol use disorder who are more likely to relapse. However the theoretical importance of these findings and the implications for models of addiction was previously not clear. Understanding if this task indexes the general motivating effects of reward cues on instrumental responding (and whether this is sensitive to shifts in motivation for those outcomes) is critical for understanding these previous results within the context of addiction. Thus, in the current study we aimed to delineate the associative mechanisms that drive the stimulus effects observed in this PIT task. Specifically, we wished to examine whether the cueing effects observed in the cued-go/no-go task were selective in their effect on action, insofar as Pavlovian cues specifically invigorated (or suppressed) responding only if they were associated with congruent outcomes. We conclude that the PIT measured with this task is general in nature. Surprisingly however, the biasing effects of Pavlovian cues on instrumental responding did not appear to be sensitive to outcome devaluation.
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138
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El Haj M, Moustafa AA. "Ten dollars today or 50 dollars after one month?" Temporal discounting in Korsakoff syndrome. Cogn Neuropsychiatry 2023; 28:116-129. [PMID: 36724487 DOI: 10.1080/13546805.2023.2173059] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Little research has investigated decision making in patients with Korsakoff syndrome (KS). Specifically, to our knowledge, there is a lack of research investigating whether patients with KS may tend to prefer immediate over future rewards (i.e., temporal discounting). Further, we investigated the relationship between temporal discounting and inhibition. METHODS We, for the first time, invited patients with KS and control participants to perform a temporal discounting task, in which they answered questions probing preferences between an immediate, but smaller amount of money, and a delayed, but larger amount of money (e.g., "would you prefer 10 dollars today or 50 dollars after one month?"). Furthermore, inhibition was measured using the Stroop Colour Word Test. RESULTS Analysis demonstrated higher temporal discounting in patients with KS than in control participants. Temporal discounting in both populations was significantly correlated with inhibition. CONCLUSIONS Patients with KS may have difficulties to suppress the temptation of smaller, but immediate, rewards.
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Affiliation(s)
- Mohamad El Haj
- Laboratoire de Psychologie des Pays de la Loire (LPPL - EA 4638), Nantes Université, Univ Angers Nantes, France
- Unité de Gériatrie, Centre Hospitalier de Tourcoing, Tourcoing, France
- Institut Universitaire de France, Paris, France
| | - Ahmed A Moustafa
- School of Psychology, Faculty of Society and Design, Bond University, Gold Coast, Australia
- Department of Human Anatomy and Physiology, the Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
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139
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Collins V, Bornhoft KN, Wolff A, Sinha S, Saunders BT. Hierarchical cue control of cocaine seeking in the face of cost. Psychopharmacology (Berl) 2023; 240:461-476. [PMID: 36069951 PMCID: PMC10131580 DOI: 10.1007/s00213-022-06218-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/22/2022] [Indexed: 12/30/2022]
Abstract
RATIONALE Addiction is characterized by intermittent drug seeking despite rising costs. This behavior is heavily influenced by environmental stimuli that signal drug availability and reinforce drug seeking. OBJECTIVE To establish the relationship between three key aspects of human drug use in rats: the intermittent, binge nature of drug intake, the motivational conflict of drug seeking in the face of escalating negative costs, and the ability of different drug cues to interact to modulate relapse. METHODS Male and female rats were trained to self-administer cocaine on an intermittent access schedule, where brief drug-availability states were signaled by a shift in the ambient lighting of the environment, and cocaine infusions were signaled by a separate proximal discrete cue. Rats then went through a conflict procedure, where foot shock intensity associated with cocaine seeking was escalated until intake was suppressed. We then completed relapse tests where the drug-delivery cue was noncontingently presented alone, or in the context of dynamic drug-availability state transitions. RESULTS Intermittent access spurred psychomotor sensitization and binge-like cocaine intake. The intensity of binge-like drug taking during training was predictive of later drug seeking despite escalating costs during conflict. In relapse tests, the ability of a proximal discrete drug cue to trigger relapse was gated by the presence of a global cue signaling drug-availability state transitions. CONCLUSIONS Our results suggest that the pattern of drug intake plays a role in many features of addiction, including modifying an individual's willingness to endure high costs associated with drug seeking. Furthermore, our studies indicate that drug-related sensory information can be hierarchically organized to exert a dynamic modulating influence on drug-seeking motivation.
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Affiliation(s)
- Val Collins
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA
- Medical Discovery Team On Addiction, University of Minnesota, Minneapolis, MN, USA
- University of California, San Francisco, CA, USA
| | - Kaisa N Bornhoft
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA
- Medical Discovery Team On Addiction, University of Minnesota, Minneapolis, MN, USA
| | - Amy Wolff
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA
- Medical Discovery Team On Addiction, University of Minnesota, Minneapolis, MN, USA
| | - Sonal Sinha
- Johns Hopkins University, Baltimore, MD, USA
| | - Benjamin T Saunders
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA.
- Medical Discovery Team On Addiction, University of Minnesota, Minneapolis, MN, USA.
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Sandoval-Rodríguez R, Parra-Reyes JA, Han W, Rueda-Orozco PE, Perez IO, de Araujo IE, Tellez LA. D1 and D2 neurons in the nucleus accumbens enable positive and negative control over sugar intake in mice. Cell Rep 2023; 42:112190. [PMID: 36857179 PMCID: PMC10154129 DOI: 10.1016/j.celrep.2023.112190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 11/21/2022] [Accepted: 02/14/2023] [Indexed: 03/02/2023] Open
Abstract
Although the consumption of carbohydrates is needed for survival, their potent reinforcing properties drive obesity worldwide. In turn, sugar overconsumption reveals a major role for brain reward systems in regulating sugar intake. However, it remains elusive how different cell types within the reward circuitries control the initiation and termination of sugary meals. Here, we identified the distinct nucleus accumbens cell types that mediate the chemosensory versus postprandial properties of sweet sugars. Specifically, D1 neurons enhance sugar intake via specialized connections to taste ganglia, whereas D2 neurons mediate the termination of sugary meals via anatomical connections to circuits involved in appetite suppression. Consistently, D2, but not D1, neurons partially mediate the satiating effects of glucagon-like peptide 1 (GLP-1) agonists. Thus, these nucleus accumbens cell types function as a behavioral switch, enabling positive versus negative control over sugar intake. Our study contributes to unveiling the cellular and circuit substrates of sugar overconsumption.
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Affiliation(s)
- Rafael Sandoval-Rodríguez
- Department of Behavioral and Cognitive Neurobiology, Institute of Neurobiology, UNAM, Campus Juriquilla, Queretaro 76230, Mexico
| | - Jenifer Alejandra Parra-Reyes
- Department of Behavioral and Cognitive Neurobiology, Institute of Neurobiology, UNAM, Campus Juriquilla, Queretaro 76230, Mexico
| | - Wenfei Han
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Pavel E Rueda-Orozco
- Department of Developmental Neurobiology and Neurophysiology, Institute of Neurobiology, UNAM, Campus Juriquilla, Queretaro 76230, Mexico
| | - Isaac O Perez
- Section of Neurobiology of Oral Sensations, CUSI Almaraz, FES-Iztacala, UNAM, Mexico 54714, Mexico
| | - Ivan E de Araujo
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Luis A Tellez
- Department of Behavioral and Cognitive Neurobiology, Institute of Neurobiology, UNAM, Campus Juriquilla, Queretaro 76230, Mexico.
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Shan Q, Yu X, Tian Y. Adolescent social isolation shifts the balance of decision-making strategy from goal-directed action to habitual response in adulthood via suppressing the excitatory neurotransmission onto the direct pathway of the dorsomedial striatum. Cereb Cortex 2023; 33:1595-1609. [PMID: 35524719 DOI: 10.1093/cercor/bhac158] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/15/2022] [Accepted: 04/01/2022] [Indexed: 02/05/2023] Open
Abstract
Adverse experience, such as social isolation, during adolescence is one of the major causes of neuropsychiatric disorders that extend from adolescence into adulthood, such as substance addiction, obsessive-compulsive disorder, and eating disorders leading to obesity. A common behavioral feature of these neuropsychiatric disorders is a shift in the balance of decision-making strategy from goal-directed action to habitual response. This study has verified that adolescent social isolation directly shifts the balance of decision-making strategy from goal-directed action to habitual response, and that it cannot be reversed by simple regrouping. This study has further revealed that adolescent social isolation induces a suppression in the excitatory neurotransmission onto the direct-pathway medium spiny neurons of the dorsomedial striatum (DMS), and that chemogenetically compensating this suppression effect shifts the balance of decision-making strategy from habitual response back to goal-directed action. These findings suggest that the plasticity in the DMS causes the shift in the balance of decision-making strategy, which would potentially help to develop a general therapy to treat the various neuropsychiatric disorders caused by adolescent social isolation. Such a study is especially necessary under the circumstances that social distancing and lockdown have caused during times of world-wide, society-wide pandemic.
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Affiliation(s)
- Qiang Shan
- Laboratory for Synaptic Plasticity, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Xiaoxuan Yu
- Laboratory for Synaptic Plasticity, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Yao Tian
- Chern Institute of Mathematics, Nankai University, Tianjin, 300071, China
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142
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Wang L, Zhang Z, Wang S, Wang M, Dong H, Chen S, Du X, Dong GH. Deficient dynamics of prefrontal-striatal and striatal-default mode network (DMN) neural circuits in internet gaming disorder. J Affect Disord 2023; 323:336-344. [PMID: 36435399 DOI: 10.1016/j.jad.2022.11.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 11/07/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Studies have proven that individuals with internet gaming disorder (IGD) show impaired cognitive control over game craving; however, the neural mechanism underlying this process remains unclear. Accordingly, the present study aimed to investigate the dynamic features of brain functional networks of individuals with IGD during rest, which have barely been understood until now. METHODS Resting-state fMRI data were collected from 333 subjects (123 subjects with IGD (males/females: 73/50) and 210 healthy controls (males/females: 135/75)). First, the data-driven methodology, named co-activation pattern analysis, was applied to investigate the dynamic features of nucleus accumbens (the core region involved in craving/reward processing and addiction)-centered brain networks in IGD. Further, machine learning analysis was conducted to investigate the prediction effect of the dynamic features on participants' addiction severity. RESULTS Compared to controls, subjects in the IGD group showed decreased resilience, betweenness centrality and occurrence in the prefrontal-striatal neural circuit, and decreased in-degree in the striatal-default mode network (DMN) circuit. Moreover, these decreased dynamic features could significantly predict participants' addiction severity. LIMITATIONS The causal relationship between IGD and the abnormal dynamic features cannot be identified in this study. All the subjects were university students. CONCLUSIONS The present results revealed the underlying brain networks of uncontrollable craving and game-seeking behaviors in individuals with IGD during rest. The decreased dynamics of the prefrontal-striatal and striatal-DMN neural circuits might be potential biomarkers for predicting the addiction severity of IGD and potential targets for effective interventions to reduce game craving of this disorder.
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Affiliation(s)
- Lingxiao Wang
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Institute of Psychological Science, Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou, Zhejiang Province, China.
| | - Zhengjie Zhang
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Institute of Psychological Science, Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou, Zhejiang Province, China
| | - Shizhen Wang
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Institute of Psychological Science, Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou, Zhejiang Province, China
| | - Min Wang
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Department of Psychology, School of Humanities and Social Science, University of Science and Technology of China, Hefei, Anhui Province, China
| | - Haohao Dong
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China
| | - Shuaiyu Chen
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Institute of Psychological Science, Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou, Zhejiang Province, China
| | - Xiaoxia Du
- School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Guang-Heng Dong
- Centre for Cognition and Brain disorders, the Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Institute of Psychological Science, Hangzhou Normal University, Hangzhou, Zhejiang Province, China; Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou, Zhejiang Province, China.
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143
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Conditioned place preferences for virtual alcohol cues. Behav Brain Res 2023; 438:114176. [PMID: 36283566 DOI: 10.1016/j.bbr.2022.114176] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/05/2022]
Abstract
This study examined whether a conditioned place preference (CPP) could be established for a virtual reality (VR) room that previously contained virtual alcohol stimuli. 298 undergraduates with varying levels of alcohol use completed six, three-minute conditioning sessions in which they were confined to one of two visually-distinct VR rooms: one of the VR rooms contained virtual alcohol cues (CS+) while the other VR room was neutral (CS-). Following conditioning, participants completed a three-minute test session during which they had unrestricted access to both VR rooms and neither room contained any alcohol-related cues. Although no virtual alcohol cues were present, participants with alcohol use (n = 248) spent significantly longer in CS+ relative to CS- compared to participants with alcohol non-use (n = 50) during the test session. This is the first study to show that a CPP can be established using virtual alcohol cues, in the absence of any actual alcohol administration. However, participants with alcohol use did not subjectively report enjoying CS+ more than CS- and explicitly chose CS- as their preferred room. Interestingly, these findings suggest that implicit and explicit measures of CPP may tap into distinct, separable processes and should be investigated further.
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144
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Davis SE, Ferris MJ, Ananthan S, Augelli-Szafran CE, Zhu J. Novel Allosteric Modulator Southern Research Institute-32743 Reverses HIV-1 Transactivator of Transcription-Induced Increase in Dopamine Release in the Caudate Putamen of Inducible Transactivator of Transcription Transgenic Mice. J Pharmacol Exp Ther 2023; 384:306-314. [PMID: 36456195 PMCID: PMC9875314 DOI: 10.1124/jpet.122.001291] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/30/2022] [Accepted: 11/07/2022] [Indexed: 12/04/2022] Open
Abstract
Development of neurocognitive disorder in human immunodeficiency virus (HIV)-infected patients has been linked to dysregulation of dopamine by the HIV-1 transactivator of transcription (Tat) protein, a negative allosteric modulator of dopamine transporter (DAT). Using fast scan cyclic voltammetry, the present study determined the effects of in vivo Tat expression on dopamine release in the caudate putamen of inducible Tat transgenic (iTat-tg) mice and the impact of a novel DAT allosteric modulator, Southern Research Institute (SRI)-32743, on the Tat effect. We found that 7- or 14-day doxycycline (Dox)-induced Tat expression in iTat-tg mice resulted in a 2-fold increase in phasic but not tonic stimulated baseline dopamine release relative to saline control mice. To determine whether the Tat-induced increase in dopamine release is mediated by DAT regulation, we examined the effect of an in vitro applied DAT inhibitor, nomifensine, on the dopamine release. Nomifensine (1 nM-10 µM) concentration-dependently enhanced phasic stimulated dopamine release in both saline- and Dox-treated iTat-tg mice, while the magnitude of the nomifensine-mediated dopamine release was unchanged between saline and Dox treatment groups. A single systemic administration of SRI-32743 prior to animal sacrifice reversed the increased dopamine release in the baseline of phasic dopamine release and nomifensine-augmented dopamine levels in Dox-treated iTat-tg mice, while SRI-32743 alone did not alter baseline of dopamine release. These findings suggest that Tat expression induced an increase in extracellular dopamine levels by not only inhibiting DAT-mediated dopamine transport but also stimulating synaptic dopamine release. Thus, DAT allosteric modulators may serve as a potential therapeutic intervention for HIV infection-dysregulated dopamine system observed in HIV-1 positive individuals. SIGNIFICANCE STATEMENT: HIV infection-induced dysregulation of the dopaminergic system has been implicated in the development of neurocognitive impairments observed in HIV positive patients. Understanding the mechanisms underlying HIV-1 Tat protein-induced alteration of extracellular dopamine levels will provide insights into the development of molecules that can attenuate Tat interaction with targets in the dopaminergic system. Here, we determined whether Tat alters dopamine release and how the novel DAT allosteric modulator, SRI-32743, impacts dopamine neurotransmission to attenuate Tat-induced effects on extracellular dopamine dynamics.
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Affiliation(s)
- Sarah E Davis
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, South Carolina (S.E.D., J.Z.); Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.M.F.); and Department of Chemistry, Scientific Platforms, Southern Research, Birmingham, Alabama (S.A., C.E.A.)
| | - Mark J Ferris
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, South Carolina (S.E.D., J.Z.); Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.M.F.); and Department of Chemistry, Scientific Platforms, Southern Research, Birmingham, Alabama (S.A., C.E.A.)
| | - Subramaniam Ananthan
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, South Carolina (S.E.D., J.Z.); Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.M.F.); and Department of Chemistry, Scientific Platforms, Southern Research, Birmingham, Alabama (S.A., C.E.A.)
| | - Corinne E Augelli-Szafran
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, South Carolina (S.E.D., J.Z.); Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.M.F.); and Department of Chemistry, Scientific Platforms, Southern Research, Birmingham, Alabama (S.A., C.E.A.)
| | - Jun Zhu
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, South Carolina (S.E.D., J.Z.); Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina (M.M.F.); and Department of Chemistry, Scientific Platforms, Southern Research, Birmingham, Alabama (S.A., C.E.A.)
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145
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Li JY, Yu YJ, Su CL, Shen YQ, Chang CH, Gean PW. Modulation of methamphetamine memory reconsolidation by neural projection from basolateral amygdala to nucleus accumbens. Neuropsychopharmacology 2023; 48:478-488. [PMID: 36109595 PMCID: PMC9852248 DOI: 10.1038/s41386-022-01417-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 07/21/2022] [Accepted: 07/28/2022] [Indexed: 02/02/2023]
Abstract
Drug-associated conditioned cues promote subjects to recall drug reward memory, resulting in drug-seeking and reinstatement. A consolidated memory becomes unstable after recall, such that the amnestic agent can disrupt the memory during the reconsolidation stage, which implicates a potential therapeutic strategy for weakening maladaptive memories. The basolateral amygdala (BLA) involves the association of conditioned cues with reward and aversive valences and projects the information to the nucleus accumbens (NAc) that mediates reward-seeking. However, whether the BLA-NAc projection plays a role in drug-associated memory reactivation and reconsolidation is unknown. We used methamphetamine (MeAM) conditioned place preference (CPP) to investigate the role of BLA-NAc neural projection in the memory reconsolidation. Two weeks before CPP training, we infused adeno-associated virus (AAV) carrying the designer receptor exclusively activated by designer drugs (DREADD) or control constructs. We infused clozapine-N-oxide (CNO) after the recall test to manipulate the neural activity of BLA-NAc projections in mice. We found that after recall, DREADD-mediated inhibition of BLA neurons projecting to the NAc core blunted consolidated MeAM-associated memory. Inhibition of BLA glutamatergic nerve terminals in the NAc core 1 h after recall disrupted consolidated MeAM-associated memory. However, inhibiting this pathway after the time window of reconsolidation failed to affect memory. Furthermore, under the condition without memory retrieval, DREADD-mediated activation of BLA-NAc core projection was required for amnesic agents to disrupt consolidated MeAM-associated memory. Our findings provide evidence that the BLA-NAc pathway activity is involved in the post-retrieval processing of MeAM-associated memory in CPP.
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Affiliation(s)
- Jia-Ying Li
- Department of Pharmacology, National Cheng-Kung University, Tainan, 701, Taiwan, ROC
| | - Yang-Jung Yu
- Department of Pharmacology, National Cheng-Kung University, Tainan, 701, Taiwan, ROC
| | - Chun-Lin Su
- Department of Pharmacology, National Cheng-Kung University, Tainan, 701, Taiwan, ROC
| | - Yu-Qi Shen
- Department of Pharmacology, National Cheng-Kung University, Tainan, 701, Taiwan, ROC
| | - Chih-Hua Chang
- Department of Pharmacology, National Cheng-Kung University, Tainan, 701, Taiwan, ROC.
- Department of Biotechnology and Bioindustry Sciences, National Cheng-Kung University, Tainan, 701, Taiwan, ROC.
| | - Po-Wu Gean
- Department of Pharmacology, National Cheng-Kung University, Tainan, 701, Taiwan, ROC.
- Department of Biotechnology and Bioindustry Sciences, National Cheng-Kung University, Tainan, 701, Taiwan, ROC.
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146
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Burk DC, Averbeck BB. Environmental uncertainty and the advantage of impulsive choice strategies. PLoS Comput Biol 2023; 19:e1010873. [PMID: 36716320 PMCID: PMC9910799 DOI: 10.1371/journal.pcbi.1010873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 02/09/2023] [Accepted: 01/15/2023] [Indexed: 02/01/2023] Open
Abstract
Choice impulsivity is characterized by the choice of immediate, smaller reward options over future, larger reward options, and is often thought to be associated with negative life outcomes. However, some environments make future rewards more uncertain, and in these environments impulsive choices can be beneficial. Here we examined the conditions under which impulsive vs. non-impulsive decision strategies would be advantageous. We used Markov Decision Processes (MDPs) to model three common decision-making tasks: Temporal Discounting, Information Sampling, and an Explore-Exploit task. We manipulated environmental variables to create circumstances where future outcomes were relatively uncertain. We then manipulated the discount factor of an MDP agent, which affects the value of immediate versus future rewards, to model impulsive and non-impulsive behavior. This allowed us to examine the performance of impulsive and non-impulsive agents in more or less predictable environments. In Temporal Discounting, we manipulated the transition probability to delayed rewards and found that the agent with the lower discount factor (i.e. the impulsive agent) collected more average reward than the agent with a higher discount factor (the non-impulsive agent) by selecting immediate reward options when the probability of receiving the future reward was low. In the Information Sampling task, we manipulated the amount of information obtained with each sample. When sampling led to small information gains, the impulsive MDP agent collected more average reward than the non-impulsive agent. Third, in the Explore-Exploit task, we manipulated the substitution rate for novel options. When the substitution rate was high, the impulsive agent again performed better than the non-impulsive agent, as it explored the novel options less and instead exploited options with known reward values. The results of these analyses show that impulsivity can be advantageous in environments that are unexpectedly uncertain.
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Affiliation(s)
- Diana C. Burk
- Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Bruno B. Averbeck
- Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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147
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Karl D, Wieland A, Shevchenko Y, Grundinger N, Machunze N, Gerhardt S, Flor H, Vollstädt-Klein S. Using computer-based habit versus chess-based cognitive remediation training as add-on therapy to modify the imbalance between habitual behavior and cognitive control in tobacco use disorder: protocol of a randomized controlled, fMRI study. BMC Psychol 2023; 11:24. [PMID: 36698210 PMCID: PMC9875438 DOI: 10.1186/s40359-023-01055-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Although the vast majority of smokers are aware of the enormous preventable health hazards caused by smoking, only a small percentage of smokers manage to remain abstinent in the long term. One possible explanation for this discrepancy lies in the inflexibility of addictive behavior and associated disadvantageous decision-making. According to a dual-process theory of decision-making, two distinct decision systems can be identified. One slow deliberate system based on desirable expectations of outcome value described as goal-directed behavior and a fast reflexive system based on habitual instrumental behavior and driven by reinforcement experienced in the past. In the course of addiction development, an imbalance occurs between habitual behavior and goal-directed. The present study aims to investigate the modifiability of the balance between habitual and goal-directed behavior at the neurobiological and behavioral level in smokers using two different novel add-on therapies. We hypothesize that both interventions change the balance between goal-directed and habitual behavior, but by different mechanisms. Whereas a cognitive remediation treatment should directly improve cognitive control, in contrast an implicit priming task should affect the early processing and the emotional valence of smoking and smoking cues. METHODS We will conduct a randomized controlled study in treatment-seeking individuals with tobacco use disorder applying either chess-based cognitive remediation training (N = 30) or implicit computer-based habit-modifying training (N = 30) as add on therapy compared to the standard smoking cessation group therapy (N = 30) only. We will address neurobiological and neuropsychological correlates associated with craving, reward devaluation, cue reactivity and attentional bias. In addition, various effects of treatment and prediction of treatment outcome will be examined using behavioral and neural measures. DISCUSSION The present study will apply different examination methods such as functional magnetic resonance imaging, neuropsychological tests, and self-report before and after the interventions. This allows the identification of intervention-specific mechanisms and therefore potential neurobiology-based specific treatment targets for individuals with Tobacco Use Disorder. TRIAL REGISTRATION Registered at clinicaltrials.gov/ct2/show/NCT03764969 (05 December 2018).
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Affiliation(s)
- Damian Karl
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, 21 20, PO Box 12, 68072 Mannheim, Germany
| | - Alfred Wieland
- grid.7700.00000 0001 2190 4373Institute of Cognitive and Clinical Neuroscience, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Yury Shevchenko
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, 21 20, PO Box 12, 68072 Mannheim, Germany ,grid.9811.10000 0001 0658 7699Research Methods, Assessment, and iScience, Department of Psychology, University of Konstanz, Constance, Germany
| | - Nadja Grundinger
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, 21 20, PO Box 12, 68072 Mannheim, Germany
| | - Noah Machunze
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, 21 20, PO Box 12, 68072 Mannheim, Germany
| | - Sarah Gerhardt
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, 21 20, PO Box 12, 68072 Mannheim, Germany
| | - Herta Flor
- grid.7700.00000 0001 2190 4373Institute of Cognitive and Clinical Neuroscience, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Sabine Vollstädt-Klein
- grid.7700.00000 0001 2190 4373Department of Addictive Behaviour and Addiction Medicine, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, 21 20, PO Box 12, 68072 Mannheim, Germany ,grid.7700.00000 0001 2190 4373Mannheim Center for Translational Neurosciences (MCTN), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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148
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Frölich S, Esmeyer M, Endrass T, Smolka MN, Kiebel SJ. Interaction between habits as action sequences and goal-directed behavior under time pressure. Front Neurosci 2023; 16:996957. [PMID: 36711151 PMCID: PMC9880255 DOI: 10.3389/fnins.2022.996957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 12/14/2022] [Indexed: 01/15/2023] Open
Abstract
Human behavior consists in large parts of action sequences that are often repeated in mostly the same way. Through extensive repetition, sequential responses become automatic or habitual, but our environment often confronts us with events to which we have to react flexibly and in a goal-directed manner. To assess how implicitly learned action sequences interfere with goal-directed control, we developed a novel behavioral paradigm in which we combined action sequence learning through repetition with a goal-directed task component. So-called dual-target trials require the goal-directed selection of the response with the highest reward probability in a fast succession of trials with short response deadlines. Importantly, the response primed by the learned action sequence is sometimes different from that required by the goal-directed task. As expected, we found that participants learned the action sequence through repetition, as evidenced by reduced reaction times (RT) and error rates (ER), while still acting in a goal-directed manner in dual-target trials. Specifically, we found that the learned action sequence biased choices in the goal-directed task toward the sequential response, and this effect was more pronounced the better individuals had learned the sequence. Our novel task may help shed light on the acquisition of automatic behavioral patterns and habits through extensive repetition, allows to assess positive features of habitual behavior (e.g., increased response speed and reduced error rates), and importantly also the interaction of habitual and goal-directed behaviors under time pressure.
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Affiliation(s)
- Sascha Frölich
- Department of Psychology, Technische Universität Dresden, Dresden, Germany
| | - Marlon Esmeyer
- Department of Psychology, Technische Universität Dresden, Dresden, Germany
| | - Tanja Endrass
- Department of Psychology, Technische Universität Dresden, Dresden, Germany
| | - Michael N. Smolka
- Department of Psychiatry, Technische Universität Dresden, Dresden, Germany
| | - Stefan J. Kiebel
- Department of Psychology, Technische Universität Dresden, Dresden, Germany
- Centre for Tactile Internet with Human-in-the-Loop (CeTI), Technische Universität Dresden, Dresden, Germany
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149
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Goodman J, Leong KC, Packard MG. NMDA receptor blockade in the dorsolateral striatum impairs consolidation but not retrieval of habit memory. Neurobiol Learn Mem 2023; 197:107709. [PMID: 36503101 DOI: 10.1016/j.nlm.2022.107709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/24/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022]
Abstract
The present study investigated whether N-methyl-d-aspartate (NMDA) receptors in the dorsolateral striatum (DLS) mediate consolidation and retrieval of habit memory. Adult male Long-Evans rats were trained in a response learning version of a water plus-maze task in which rats were reinforced to make a habitual and consistent body-turn response at the maze choice point in order to mount a hidden escape platform. Prior research indicates that acquisition, consolidation, and retrieval in this task requires DLS function. The present study consisted of two experiments. In Experiment 1, rats received intra-DLS post-training injections of the NMDA receptor antagonist 2-amino-5- phosphonopentanoic acid (AP5; 2 µg/side) to examine the role of NMDA receptors in consolidation of habit memory. In Experiment 2, different groups of rats received a single pre-retrieval injection of AP5 in the DLS (AP5; 2 µg/side) during the last day of maze training to examine the potential role of NMDA receptors in retrieval of habit memory. Results indicated that post-training intra-DLS AP5 injections impaired memory consolidation. However, administration of AP5 at the same dose that impaired consolidation had no effect on memory retrieval. The findings are consistent with previous research indicating a role for NMDA receptors in the DLS in memory consolidation, and suggest that NMDA-dependent synaptic activity in the DLS may not be a critical component of habit memory retrieval.
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Affiliation(s)
- Jarid Goodman
- Department of Psychology, Delaware State University, Dover, DE, United States
| | - Kah-Chung Leong
- Department of Psychology, Trinity University, San Antonio, TX, United States
| | - Mark G Packard
- Department of Psychological and Brain Sciences, Texas A&M University, College Station, TX, United States
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150
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Asth L, Cruz LC, Soyombo N, Rigo P, Moreira FA. Effects of β -caryophyllene, A Dietary Cannabinoid, in Animal Models of Drug Addiction. Curr Neuropharmacol 2023; 21:213-218. [PMID: 36173065 PMCID: PMC10190141 DOI: 10.2174/1570159x20666220927115811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND β-caryophyllene (BCP) is a natural bicyclic sesquiterpene found in Cannabis and other plants. BCP is currently used as a food additive, although pharmacological studies suggest its potential therapeutic application for the treatment of certain brain disorders. The mechanisms of action of BCP remain uncertain, possibly including full agonism at the cannabinoid CB2 receptor (CB2R). OBJECTIVE The study aims to investigate BCP's potential as a new drug for the treatment of substance use disorders by reviewing preclinical studies with animal models. RESULTS BCP has been investigated in behavioral paradigms, including drug self-administration, conditioned place preference, and intracranial self-stimulation; the drugs tested were cocaine, nicotine, alcohol, and methamphetamine. Remarkably, BCP prevented or reversed behavioral changes resulting from drug exposure. As expected, the mechanism of action entails CB2R activation, although this is unlikely to constitute the only molecular target to explain such effects. Another potential target is the peroxisome proliferator-activated receptor. CONCLUSION Preclinical studies have reported promising results with BCP in animal models of substance use disorders. Further research, including studies in humans, are warranted to establish its therapeutic potential and its mechanisms of action.
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Affiliation(s)
- Laila Asth
- Department of Pharmacology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Leonardo Cardoso Cruz
- Department of Pharmacology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Nicholas Soyombo
- Department of Pharmacology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Pedro Rigo
- Department of Pharmacology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fabrício A. Moreira
- Department of Pharmacology, Institute of Biological Science, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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